5e Underdark Monsters
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Underdark Monsters, Quality and Featured
These monsters have been vetted through the Featured Articles or Quality Articles process and are suitable for any normal campaign.
| Name | CR | Speed | Size | Type | Alignment |
|---|---|---|---|---|---|
| Anabast | 20 | 0 ft., fly 60 ft. (hover) | Medium | undead | neutral evil |
| Face Eater | 1/2 | 10 ft., fly 40 ft. | Tiny | monstrosity | unaligned |
Underdark Monsters
| Name | CR | Speed | Size | Type | Alignment |
|---|---|---|---|---|---|
| Aalar's Chosen Grimlock | 3 | 30 ft. | Medium | humanoid | neutral evil |
| Abathrael | 28 | 0 ft., fly 30 ft. (hover) | Medium | aberration | neutral |
| Aberrant Demagogue | 10 | 10 ft. | Large | aberration | lawful evil |
| Abyssal Dragon | 16 | 40 ft., fly 60 ft. | Huge | dragon | chaotic evil |
| Abyssal Terror | 7 | 30 ft., fly 60 ft. | Large | undead | neutral evil |
| Acid Bug | 1 | 30 ft., fly 30 ft. | Small | beast | unaligned |
| Adult Mercury Dragon | 14 | 40 ft., climb 40 ft., fly 80 ft. | Huge | dragon | chaotic good |
| Adult Purple Dragon | 15 | 40 ft., climb 40 ft., fly 80 ft. | Huge | dragon | lawful evil |
| Aegis Reflector | 4 | 30 ft. | Medium | construct | neutral |
| Afilate | 3 | 30 ft., climb 30 ft. | Small | aberration | unaligned |
| Afilate Abomination | 9 | 30 ft., climb 30 ft. | Medium | aberration | unaligned |
| Ahrimaniphim | 14 | 40 ft., fly 70 ft. | Large | undead | neutral evil |
| Al-Mi'raj | 1/4 | 40 ft., burrow 15 ft. | Small | beast | unaligned |
| Albino Moray | 13 | 10 ft., swim 40 ft. | Huge | beast | unaligned |
| Albino Penguin | 1/2 | 30 ft., swim 60 ft. | Medium | beast | unaligned |
| Alpha Metroid | 8 | 0 ft., fly 40 ft. | Medium | aberration | unaligned |
| Amethyst Gargoyle | 5 | 30 ft., fly 60 ft. | Medium | elemental | chaotic evil |
| Amphisbaena | 3 | 30 ft., swim 30 ft. | Large | monstrosity | unaligned |
| Ancient Crystal | 12 | 20 ft., fly 90 ft. (hover) | Huge | elemental | lawful good |
| Ancient Dragun | 24 | 40 ft., fly 80 ft. | Gargantuan | dragon | neutral evil |
| Ancient Mercury Dragon | 21 | 40 ft., climb 40 ft., fly 80 ft. | Gargantuan | dragon | chaotic good |
| Ancient Purple Dragon | 22 | 40 ft., climb 40 ft., fly 80 ft. | Gargantuan | dragon | lawful evil |
| Angler Crab | 13 | 40 ft., swim 20 ft. | Gargantuan | beast | unaligned |
| Anglesnipe | 0 | 0 ft., fly 60 ft. (hover) | Tiny | aberration | chaotic neutral |
| Apocalypse Ooze | 22 | 25 ft., climb 25 ft. | Huge | ooze | unaligned |
| Arachnarok | 16 | 40 ft., climb 40 ft. | Gargantuan | monstrosity | neutral |
| Arachnicid | 6 | 30 ft., climb 30 ft. | Large | monstrosity | chaotic evil |
| Archer, Variant 2 | 3 | 30 ft. | Medium | humanoid | any alignment |
| Argos Hound | 6 | 40 ft., climb 40 ft. | Medium | aberration | lawful good |
| Arixen Vutha Vignar | 10 | 40 ft., fly 60 ft., swim 40 ft. | Large | undead | lawful evil |
| Armonto | 1/2 | 25 ft., burrow 25 ft. | Large | aberration | neutral evil |
| Armored Goblin | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Armored Troll | 8 | 30 ft. | Large | giant | chaotic evil |
| Aswang | 3 | 30 ft., climb 30 ft. | Medium | undead | neutral evil |
| Atropal | 30 | 10 ft., fly 80 ft. (hover) | Huge | undead | lawful evil |
| Atrophus | 4 | 40 ft. | Large | monstrosity | chaotic evil |
| Aura Ooze | 1 | 15 ft., climb 10 ft. | Medium | ooze | unaligned |
| Auroral Megalops | 10 | 40 ft., swim 20 ft. | Huge | beast | unaligned |
| Axebearer Cataphractoi | 4 | 25 ft. | Medium | undead | lawful evil |
| Bakemono | 1/4 | 30 ft., climb 30 ft. | Small | humanoid | chaotic neutral |
| Bakemono no Majo | 1/2 | 30 ft., swim 30 ft. | Medium | humanoid | neutral evil |
| Bale Taurus | 8 | 40 ft., fly 60 ft. | Large | monstrosity | neutral evil |
| Barghest | 5 | 30 ft. | Medium | fiend | lawful evil |
| Battle Master | 3 | 30 ft. | Medium | humanoid | any alignment |
| Black Orc | 3 | 30 ft. | Medium | humanoid | lawful evil |
| Black Pudding Sea | 24 | 20 ft., climb 20 ft. | Gargantuan | ooze | unaligned |
| Black Slime | 1/2 | 20 ft. | Medium | ooze | unaligned |
| Blackland Fire Dragon | 4 | 30 ft., fly 40 ft. | Large | dragon | neutral evil |
| Blazeclaw | 11 | 40 ft. | Large | monstrosity | chaotic evil |
| Blazeclaw Burner | 14 | 40 ft. | Large | monstrosity | chaotic evil |
| Bleeder Swarm | 2 | 0 ft., fly 40 ft. | Medium | undead | unaligned |
| Blight Dragon | 16 | 30 ft., fly 30 ft. | Huge | dragon | neutral evil |
| Blightweaver Druid | 6 | 30 ft. | Medium | humanoid | any non-good alignment |
| Blood Alchemist | 5 | 30 ft. | Medium | undead | any evil alignment |
| Blood Beast | 6 | 20 ft., climb 20 ft., swim 20 ft. | Large | ooze | neutral evil |
| Blood Elemental | 6 | 30 ft., swim 80 ft. | Large | elemental | neutral |
| Blood Ooze | 3 | 20 ft., climb 20 ft., swim 20 ft. | Medium | ooze | unaligned |
| Blood Sage | 10 | 30 ft. | Medium | undead | lawful evil |
| Bloodbloater | 1/8 | 5 ft., swim 15 ft. | Tiny | ooze | unaligned |
| Blue Pikmin | 0 | 30 ft., swim 30 ft. | Tiny | plant | unaligned |
| Bodak, Variant | 7 | 20 ft. | Medium | undead | chaotic evil |
| Boe | 0 | 20 ft. | Tiny | aberration | unaligned |
| Bog Unicorn | 5 | 60 ft. | Large | undead | neutral evil |
| Bog Wader | 3 | 30 ft., burrow 30 ft., swim 30 ft. | Medium | humanoid | chaotic neutral |
| Bone Ballista | 3 | 15 ft. | Medium | undead | chaotic evil |
| Bone Strider | 1 | 25 ft. | Tiny | undead | neutral evil |
| Bonecrusher | 7 | 40 ft. | Large | undead | lawful evil |
| Bonewrack | 5 | 40 ft. | Large | undead | neutral evil |
| Boo | 1 | 0 ft., fly 20 ft. (hover) | Medium | undead | neutral evil |
| Bouncing Fungus | 0 | 20 ft. | Small | plant | unaligned |
| Bound Shadow | 0 | 60 ft. | Medium | aberration | neutral evil |
| Broken One | 1/2 | 30 ft. | Medium | humanoid | neutral |
| Brood Horror | 5 | 50 ft. | Large | monstrosity | unaligned |
| Brown Slime | 3 | 20 ft., climb 20 ft. | Large | ooze | unaligned |
| Brown Tide Oblex | 7 | 20 ft. | Medium | ooze | chaotic evil |
| Brown Tide Ooze | 6 | 20 ft., climb 20 ft., swim 20 ft. | Large | ooze | unaligned |
| Bugbear Curser | 2 | 30 ft. | Medium | humanoid | chaotic evil |
| Bugbear Doomclaw | 10 | 30 ft. | Medium | humanoid | chaotic evil |
| Bugbear Elite Warrior | 8 | 30 ft. | Large | humanoid | chaotic evil |
| Bugbear Hammerer | 2 | 30 ft. | Medium | humanoid | chaotic evil |
| Bugbear Savage | 18 | 40 ft. | Medium | humanoid | chaotic evil |
| Bugbear Shaman | 3 | 30 ft. | Medium | humanoid | chaotic evil |
| Bugbear Vileclaw | 4 | 30 ft. | Medium | humanoid | chaotic evil |
| Bull Cantankeri | 14 | 30 ft., burrow 10 ft., swim 30 ft. | Huge | beast | unaligned |
| Burning Blood Ancestor | 5 | 40 ft. | Medium | undead | chaotic evil |
| Buwan Aswang | 5 | 30 ft., fly 50 ft. | Large | undead | neutral evil |
| Buzzilisk | 2 | 10 ft. | Small | monstrosity | unaligned |
| Buzzy Beetle | 1/2 | 25 ft., climb 25 ft. | Medium | humanoid | neutral |
| Cairn Wraith | 3 | 0 ft., fly 50 ft. (hover) | Medium | undead | neutral evil |
| Carnogeist | 17 | 30 ft., fly 30 ft. (hover) | Huge | undead | unaligned |
| Cave Squig | 1/4 | 25 ft. | Small | monstrosity | unaligned |
| Cave Troll | 7 | 30 ft., climb 30 ft. | Large | giant | chaotic evil |
| Cave Wyvern | 6 | 30 ft., climb 10 ft., swim 50 ft. | Large | dragon | unaligned |
| Cavern Lamprey | 2 | 10 ft., climb 10 ft., swim 10 ft. | Huge | beast | unaligned |
| Cavern Watcher | 2 | 10 ft., climb 10 ft. | Small | beast | neutral evil |
| Cavigog | 5 | 20 ft. | Large | monstrosity | chaotic evil |
| Centripetal | 1/8 | 15 ft. | Small | plant | unaligned |
| Chain Chomp | 5 | 50 ft. | Medium | beast | chaotic neutral |
| Chaos Drake | 8 | 40 ft., fly 80 ft. | Large | dragon | chaotic neutral |
| Chernobeam | 6 | 30 ft. | Medium | monstrosity | unaligned |
| Chorister Bee | 1/2 | 10 ft., fly 40 ft. | Small | beast | unaligned |
| Chryssalid | 2 | 50 ft., climb 50 ft. | Medium | monstrosity | unaligned |
| Chuchu | 1 | 20 ft. | Medium | ooze | unaligned |
| Chupacabra | 5 | 30 ft., fly 60 ft. | Small | monstrosity | chaotic evil |
| Clicker | 1 | 10 ft. | Small | monstrosity | lawful evil |
| Cliff Beast | 1 | 30 ft., climb 30 ft. | Medium | beast | neutral |
| Cognosticator | 5 | 5 ft. | Medium | monstrosity | neutral |
| Corpse Worm | 1/8 | 10 ft., burrow 5 ft., swim 20 ft. | Tiny | beast | unaligned |
| Corrupted Skeleton | 1 | 30 ft. | Medium | undead | chaotic evil |
| Crag Spider | 3 | 30 ft., climb 30 ft. | Large | beast | unaligned |
| Crawling Creeper | 2 | 20 ft., climb 20 ft. | Large | plant | unaligned |
| Creeper | 2 | 30 ft. | Medium | monstrosity | chaotic evil |
| CRTyrant | 12 | 30 ft. | Gargantuan | construct | chaotic evil |
| Crypt Horror | 5 | 30 ft. | Large | undead | chaotic evil |
| Crypt Stalker | 3 | 30 ft. | Large | undead | neutral evil |
| Crystal Drake | 7 | 30 ft., fly 60 ft. | Large | dragon | neutral good |
| Crystal Rager | 11 | 25 ft., burrow 25 ft. | Large | elemental | neutral |
| Cthonian Coeurl | 6 | 40 ft., climb 30 ft. | Large | monstrosity | lawful evil |
| Cult Mage of Taurus | 1 | 40 ft. | Medium | humanoid | lawful evil |
| Curator | 15 | 20 ft., climb 20 ft., fly 80 ft. | Huge | monstrosity | any alignment |
| Cursed Keese | 1/4 | 5 ft., fly 30 ft. (hover) | Tiny | undead | neutral evil |
| Cyclops, Variant | 6 | 40 ft. | Large | giant | neutral |
| Dalasmir | 8 | 10 ft., burrow 30 ft., fly 30 ft. (hover) | Large | monstrosity | neutral evil |
| Dalasmir Spawn | 1 | 5 ft., burrow 25 ft., fly 30 ft. (hover) | Tiny | monstrosity | neutral evil |
| Daogui | 1/2 | 30 ft., climb 30 ft. | Medium | humanoid | chaotic evil |
| Dark Hound | 3 | 30 ft. | Medium | monstrosity | unaligned |
| Dark Orb | 1 | 0 ft., fly 40 ft. (hover) | Small | elemental | neutral |
| Dark Tormentor | 14 | 30 ft. | Large | fiend | neutral evil |
| Darkstrike | 3 | 5 ft., climb 5 ft., swim 5 ft. | Medium | beast | neutral |
| Deadly Dancer | 3 | 60 ft. | Medium | aberration | chaotic neutral |
| Death Giant | 9 | 40 ft. | Huge | giant | neutral evil |
| Death Mephit | 1 | 30 ft., fly 30 ft. | Small | elemental | neutral evil |
| Death Titan | 21 | 40 ft. | Gargantuan | giant | neutral evil |
| Deepspawn | 10 | 20 ft., swim 20 ft. | Huge | aberration | chaotic evil |
| Delver | 1 | 30 ft., burrow 20 ft., swim 20 ft. | Small | monstrosity | chaotic neutral |
| Demizen Wraith | 10 | 0 ft., fly 60 ft. (hover) | Medium | undead | neutral evil |
| Demon Cultist | 1 | 30 ft. | Medium | fiend | chaotic evil |
| Destrachan | 7 | 30 ft., climb 20 ft. | Large | aberration | lawful evil |
| Devourer Black Blood | 21 | 40 ft. | Huge | fiend | chaotic evil |
| Dismembered One | 8 | 10 ft., climb 10 ft. | Large | ooze | chaotic evil |
| Distraught Soul | 0 | 0 ft., fly 20 ft. (hover) | Small | undead | chaotic neutral |
| Distraught Souls | 3 | 0 ft., fly 30 ft. (hover) | Large | undead | chaotic evil |
| Dokufu | 22 | 50 ft., burrow 50 ft., climb 50 ft. | Gargantuan | fiend | neutral evil |
| Doommark | 8 | 35 ft. | Medium | undead | lawful evil |
| Dracodrider | 8 | 30 ft., climb 30 ft., fly 60 ft. | Large | monstrosity | chaotic evil |
| Dracogoblin Warrior | 1 | 30 ft. | Small | humanoid | neutral evil |
| Dracohybrid Charger | 5 | 50 ft. | Large | monstrosity | unaligned |
| Dracohybrid Glistener | 3 | 30 ft., fly 30 ft. | Medium | monstrosity | unaligned |
| Dracohybrid Harpooner | 2 | 30 ft. | Small | monstrosity | unaligned |
| Dracohybrid Harrier | 3 | 10 ft., fly 60 ft. | Small | monstrosity | unaligned |
| Dracohybrid Lurker | 1 | 50 ft., climb 40 ft. | Medium | monstrosity | unaligned |
| Dracohybrid Mauler | 7 | 40 ft., swim 30 ft. | Large | monstrosity | unaligned |
| Dracohybrid Melter | 1/2 | 20 ft., climb 20 ft. | Tiny | monstrosity | unaligned |
| Dracohybrid Overlord | 23 | 40 ft., climb 40 ft., fly 80 ft. | Gargantuan | monstrosity | any evil alignment |
| Dracohybrid Pursuer | 1 | 40 ft. | Medium | monstrosity | unaligned |
| Dracohybrid Stinger | 2 | 10 ft., fly 50 ft. | Tiny | monstrosity | unaligned |
| Dracohybrid Tyrant | 16 | 40 ft., fly 60 ft. | Huge | monstrosity | any evil alignment |
| Dracohybrid Wrecker | 12 | 40 ft., swim 80 ft. | Huge | monstrosity | unaligned |
| Draugolf | 3 | 60 ft. | Medium | monstrosity | unaligned |
| Dread Bat | 2 | 20 ft., fly 60 ft. | Large | beast | unaligned |
| Dread Dalasmir | 18 | 15 ft., burrow 35 ft., fly 40 ft. (hover) | Huge | monstrosity | neutral evil |
| Dread Rat | 1 | 30 ft. | Large | beast | unaligned |
| Dread Specter | 12 | 0 ft., fly 50 ft. (hover) | Medium | undead | chaotic evil |
| Dread Wraith | 25 | 0 ft., fly 60 ft. (hover) | Large | undead | neutral evil |
| Drider Lurker | 10 | 30 ft., climb 30 ft. | Large | monstrosity | chaotic evil |
| Drider Priest | 6 | 30 ft., climb 30 ft. | Large | monstrosity | chaotic evil |
| Drooling One | 1/4 | 15 ft., climb 15 ft. | Medium | ooze | chaotic evil |
| Drow Chosen Consort | 9 | 30 ft. | Medium | humanoid | neutral evil |
| Drow Lady of Spiders | 13 | 30 ft. | Medium | humanoid | neutral evil |
| Drow Shadowsword | 9 | 30 ft. | Medium | humanoid | neutral evil |
| Druidic Initiate | 1/4 | 30 ft. | Medium | humanoid | any alignment |
| Dual Duelist | 9 | 40 ft. | Medium | aberration | chaotic neutral |
| Duergar Bull Centaur | 5 | 50 ft. | Large | monstrosity | lawful evil |
| Duergar Darkmind | 3 | 25 ft. | Medium | humanoid | lawful evil |
| Duergar Ironskin | 6 | 25 ft. | Medium | humanoid | lawful evil |
| Duergar Theurge | 6 | 25 ft. | Medium | humanoid | lawful evil |
| Dugnutt | 2 | 20 ft. | Small | humanoid | neutral good |
| Echidna | 26 | 40 ft., swim 40 ft. | Gargantuan | monstrosity | lawful evil |
| Echo Knight | 4 | 30 ft. | Medium | humanoid | any alignment |
| Elder Brain, Variant | 18 | 5 ft., fly 5 ft., swim 10 ft. | Huge | aberration | lawful evil |
| Eldritch Knight | 3 | 30 ft. | Medium | humanoid | any alignment |
| Ember Guard | 15 | 30 ft. | Huge | elemental | lawful evil |
| Embrac | 4 | 20 ft. | Large | aberration | unaligned |
| Empowered Orc | 5 | 30 ft. | Medium | humanoid | chaotic evil |
| Entombed | 4 | 30 ft. | Large | undead | neutral evil |
| Entombed Crypt Lord | 18 | 30 ft. | Huge | undead | neutral evil |
| Entombed Marauder | 7 | 30 ft. | Huge | undead | neutral evil |
| Esophagullet | 9 | 20 ft. | Huge | monstrosity | unaligned |
| Eternally-Rasping One | 11 | 20 ft. | Large | monstrosity | lawful evil |
| Ether Elemental | 6 | 60 ft., fly 60 ft. (hover) | Large | elemental | neutral |
| Ettin Wiccan | 7 | 40 ft. | Large | giant | chaotic evil |
| Ettin, Greater | 7 | 40 ft. | Large | giant | chaotic evil |
| Excremental | 1/2 | 20 ft. | Large | elemental | unaligned |
| Excremini | 1/8 | 15 ft. | Small | elemental | unaligned |
| Faceless One | 8 | 30 ft. | Medium | fiend | chaotic evil |
| False Death Tyrant | 4 | 0 ft., fly 30 ft. (hover) | Large | undead | chaotic evil |
| Fiend Spider | 6 | 50 ft., climb 50 ft. | Huge | monstrosity | neutral evil |
| Fire Giant Flickering Flame | 16 | 40 ft. | Huge | giant | chaotic good (50%) or chaotic evil (50%) |
| Fire Spider | 8 | 30 ft., climb 30 ft. | Large | beast | unaligned |
| Fire Titan | 18 | 30 ft. | Gargantuan | giant | lawful good (50%) or lawful evil (50%) |
| Flechette Slime | 1/2 | 10 ft., climb 10 ft. | Medium | ooze | unaligned |
| Flesh Blob | 1/8 | 20 ft. | Small | monstrosity | unaligned |
| Flesh Pits Sorcerer | 4 | 30 ft. | Medium | humanoid | chaotic evil |
| Flesher Adult | 3 | 30 ft. | Medium | fiend | chaotic evil |
| Flesher Alpha | 6 | 30 ft. | Large | fiend | chaotic evil |
| Flesher Juvenile | 1 | 30 ft. | Medium | fiend | chaotic evil |
| Flesher Kit | 1/2 | 30 ft. | Tiny | fiend | chaotic evil |
| Fleshtearer Troll | 7 | 30 ft. | Large | undead | chaotic evil |
| Fleshwrack | 5 | 20 ft. | Large | undead | neutral evil |
| Flinger | 1/4 | 30 ft. | Medium | monstrosity | unaligned |
| Floating Cyclops Skull | 3 | 0 ft., fly 30 ft. (hover) | Medium | undead | typically neutral evil |
| Force Orb | 1 | 0 ft., fly 50 ft. (hover) | Small | elemental | neutral |
| Forge Giant | 16 | 40 ft. | Gargantuan | giant | neutral |
| Foul Seeker | 2 | 25 ft. | Medium | aberration | chaotic evil |
| Foulblood Kilkorn | 12 | 30 ft., fly 30 ft. | Large | humanoid | lawful evil |
| Froghemount | 5 | 30 ft., swim 30 ft. | Medium | monstrosity | lawful evil |
| Fungal Grick | 5 | 30 ft., climb 15 ft. | Large | aberration | neutral |
| Fungal Warrior | 1 | 35 ft.; swim 35 ft. (Waterorb only) | Medium | plant | unaligned |
| Galerog | 4 | 40 ft., swim 30 ft. | Large | aberration | chaotic evil |
| Galien | 5 | 25 ft. | Medium | monstrosity | lawful good |
| Gamma Metroid | 10 | 40 ft., climb 40 ft., fly 40 ft. | Large | aberration | unaligned |
| Gatekeeper | 8 | 0 ft., fly 30 ft. (hover) | Large | aberration | lawful evil |
| Gel Cube | 1/2 | 15 ft. | Small | ooze | unaligned |
| Gemstone Elemental | 4 | 40 ft. | Medium | elemental | neutral |
| Geodic | 8 | 30 ft. | Large | elemental | neutral |
| Geodude | 1 | 15 ft. | Small | elemental | unaligned |
| Ghastly Warlock | 4 | 30 ft. | Medium | undead | chaotic evil |
| Ghorgon | 12 | 40 ft. | Huge | monstrosity | chaotic evil |
| Ghoul Jester | 5 | 30 ft. | Medium | undead | chaotic evil |
| Ghoul Lord | 6 | 30 ft. | Medium | undead | chaotic evil |
| Giant Cobra | 1 | 30 ft., swim 30 ft. | Large | beast | unaligned |
| Giant Cockroach | 1/8 | 30 ft., fly 30 ft. | Large | beast | unaligned |
| Giant Rat Skeleton | 1/4 | 30 ft. | Small | undead | lawful evil |
| Giant Roach | 0 | 30 ft., fly 30 ft. | Small | beast | unaligned |
| Giant Slime | 5 | 25 ft., climb 25 ft. | Large | ooze | unaligned |
| Giant Spider Matriarch | 5 | 30 ft., climb 30 ft. | Large | beast | unaligned |
| Giant Zombie | 7 | 25 ft. | Huge | undead | neutral evil |
| Gibbergeist | 5 | 40 ft., fly 30 ft. (hover) | Small | undead | unaligned |
| Gibberwock | 6 | 20 ft., fly 80 ft. | Large | dragon | unaligned |
| Girubokku | 1/4 | 0 ft., fly 30 ft. (hover) | Small | aberration | chaotic evil |
| Glass Slime | 5 | 20 ft., climb 20 ft. | Large | ooze | unaligned |
| Gleerok | 8 | 40 ft., burrow 20 ft., swim 60 ft. | Huge | dragon | lawful evil |
| Gloom | 1 | 0 ft., fly 40 ft. (hover) | Medium | undead | neutral evil |
| Gloom Stalker | 5 | 30 ft. | Medium | humanoid | any alignment |
| Gloomba | 1/4 | 25 ft. | Small | plant | neutral |
| Glow Pikmin | 0 | 0 ft., fly 30 ft. (hover) | Tiny | plant | unaligned |
| Gobbol | 1 | 30 ft. | Small | humanoid | chaotic evil |
| Goblin Alchemist | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Army | 25 | 30 ft. | Gargantuan | humanoid | lawful evil |
| Goblin Banneret | 3 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Brute | 3 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Cavalry | 3 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Creeper | 16 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Defender | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Fumespewer | 3 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Hunter | 1 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Lowwayman | 1 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Outrider | 2 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Romancist | 9 | 30 ft. | Small | humanoid | any chaotic alignment |
| Goblin Rouser | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Samurai | 3 | 25 ft. | Small | humanoid | lawful evil |
| Goblin Scholar | 5 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Sergeant | 4 | 30 ft. | Small | humanoid | lawful evil |
| Goblin Shaman | 3 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Sharpshooter | 1 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Soldier | 2 | 30 ft. | Small | humanoid | lawful evil |
| Goblin Warmage | 2 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Warrior | 1 | 30 ft. | Small | humanoid | neutral evil |
| Goblin Wolf Rider | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Gold Skulltula | 1/8 | 10 ft., climb 10 ft. | Small | beast | unaligned |
| Golgotha | 5 | 20 ft. | Medium | monstrosity | neutral |
| Goomba | 1/8 | 25 ft. | Small | plant | lawful neutral |
| Gorebull | 12 | 50 ft. | Huge | monstrosity | chaotic evil |
| Goriya | 1/4 | 30 ft. | Medium | humanoid | lawful evil |
| Graug | 19 | 40 ft. | Huge | giant | unaligned |
| Gravesnitch | 1 | 40 ft., burrow 5 ft. | Small | ooze | unaligned |
| Gray Oozeling | 1/4 | 20 ft., climb 20 ft. | Small | ooze | unaligned |
| Great Crystal | 8 | 15 ft., fly 60 ft. (hover) | Huge | elemental | lawful good |
| Great Mimic | 7 | 15 ft. (30 ft. in humanoid form) | Medium | monstrosity | any chaotic alignment |
| Greater Doppelganger | 7 | 30 ft. | Medium | monstrosity | neutral evil |
| Greater Kusk | 5 | 35 ft., climb 35 ft. | Large | aberration | unaligned |
| Greater Wight | 5 | 30 ft. | Medium | undead | neutral evil |
| Green Slime Ooze | 2 | 20 ft. | Medium | ooze | unaligned |
| Gremishka, Variant | 1/4 | 30 ft. | Tiny | monstrosity | |
| Grey Fungus | 1/4 | 20 ft. | Medium | plant | neutral evil |
| Grimlock Mindspeaker | 1/2 | 30 ft. | Medium | humanoid | neutral evil |
| Grimworm | 10 | 50 ft., burrow 30 ft. | Huge | fiend | neutral evil |
| Grinexx | 12 | 40 ft., swim 40 ft. | Huge | dragon | neutral evil |
| Hairy Lizard | 1/8 | 20 ft. | Tiny | beast | chaotic neutral |
| Half-Fiend Minotaur | 5 | 40 ft., fly 40 ft. | Large | monstrosity | any evil alignment |
| Half-Illithid Lizardfolk | 2 | 30 ft., swim 30 ft. | Medium | aberration | neutral evil |
| Half-Ogre Thief | 3 | 30 ft. | Large | giant | any chaotic alignment |
| Half-Troll | 2 | 30 ft. | Large | giant | any chaotic alignment |
| Hardhat Beetle | 1 | 20 ft. | Medium | monstrosity | unaligned |
| Harlok's Forgemaster | 9 | 25 ft. | Medium | humanoid | neutral evil |
| Heckler | 2 | 30 ft., fly 30 ft. | Small | fiend | neutral evil |
| High Warlord | 20 | 40 ft. | Medium | humanoid | any alignment |
| Hint | 1/2 | 80 ft. | Small | aberration | neutral evil |
| Hobgoblin Black Warden | 10 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin Commander | 2 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin Darkblade | 6 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin General | 14 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin High Priest | 10 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin Monarch | 14 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin Priest | 5 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin Seer | 2 | 30 ft. | Medium | humanoid | lawful evil |
| Hobgoblin War Priest | 5 | 30 ft. | Medium | humanoid | lawful evil |
| Horned Hulk | 7 | 40 ft., burrow 10 ft. | Large | monstrosity | chaotic evil |
| Horriblin | 1/2 | 30 ft. | Medium | humanoid | neutral evil |
| Horror Head | 2 | 30 ft., climb 30 ft. | Small | undead | neutral evil |
| Ice Pikmin | 0 | 30 ft. | Tiny | plant | unaligned |
| Indigo Slime | 1/2 | 10 ft., climb 10 ft. | Medium | ooze | unaligned |
| Indoraptor | 5 | 45 ft. | Large | beast | unaligned |
| Iridescent Beetle | 1/4 | 30 ft., burrow 10 ft., fly 10 ft. | Small | beast | neutral |
| Iron Ogre | 5 | 40 ft. | Large | giant | chaotic evil |
| Jazul | 5 | 30 ft. | Large | giant | chaotic evil |
| Jazul Shiredo | 7 | 30 ft. | Large | giant | chaotic evil |
| Jelly Cube | 1/8 | 15 ft. | Tiny | ooze | unaligned |
| Jewel Ooze | 10 | 25 ft., climb 25 ft. | Large | ooze | unaligned |
| Jillyfleur | 8 | 0 ft., swim 60 ft. | Large | beast | unaligned |
| Kajhar | 5 | 40 ft. | Large | monstrosity | unaligned |
| Kalkara | 6 | 30 ft. | Large | aberration | neutral evil |
| Karatar | 21 | 60 ft. | Huge | giant | chaotic evil |
| Keese | 1/8 | 5 ft., fly 30 ft. (hover) | Tiny | fiend | neutral evil |
| Keymaster | 7 | 30 ft. | Medium | aberration | lawful neutral |
| Kigrid | 2 | 40 ft. | Medium | aberration | neutral evil |
| Kilko | 1/8 | 25 ft. | Tiny | humanoid | lawful evil |
| Kilkorn | 4 | 30 ft. | Medium | humanoid | lawful evil |
| Kilkorn Enforcer | 7 | 30 ft. | Medium | humanoid | lawful evil |
| Kilkorn Hunter | 6 | 30 ft. | Medium | humanoid | lawful evil |
| Kilkorn Knight | 8 | 30 ft. | Medium | humanoid | lawful evil |
| Kilkorn Overlord | 21 | 30 ft., fly 30 ft. | Huge | fiend | lawful evil |
| Kilkorn Vestige | 13 | 30 ft., fly 30 ft. | Large | fiend | lawful evil |
| Kilkorn Zealot | 5 | 30 ft. | Medium | humanoid | lawful evil |
| Knuckledragger | 4 | 40 ft. | Large | giant | chaotic evil |
| Kobold Boss | 2 | 30 ft. | Small | humanoid | lawful evil |
| Kobold Skirmisher | 2 | 30 ft. | Small | humanoid | lawful evil |
| Kobold Soldier | 1/2 | 30 ft. | Small | humanoid | lawful evil |
| Kobold Standard-bearer | 1/4 | 30 ft. | Small | humanoid | lawful evil |
| Kobold, Dragontouched | 1/2 | 30 ft. | Small | humanoid | lawful evil |
| Kodongo | 1/2 | 30 ft. | Small | dragon | chaotic evil |
| Koh, The Face Stealer | 20 | 40 ft. | Huge | fey | lawful evil |
| Koopa Troopa | 1/4 | 30 ft. | Medium | humanoid | lawful neutral |
| Kruthik Zephyr | 4 | 60 ft., burrow 30 ft., climb 60 ft. | Medium | monstrosity | unaligned |
| Krvavrilo | 13 | 40 ft., fly 60 ft. | Large | fiend | chaotic evil |
| Krypt Creature | 3 | 30 ft. | Medium | undead | chaotic evil |
| Kusk | 2 | 30 ft., climb 30 ft. | Medium | aberration | unaligned |
| Lanmola | 4 | 40 ft., burrow 40 ft. | Large | monstrosity | chaotic neutral |
| Large Breed Arachne | 5 | 30 ft., burrow 30 ft., climb 30 ft. | Large | monstrosity | chaotic neutral |
| Larva Metroid | 6 | 0 ft., fly 40 ft. | Medium | aberration | unaligned |
| Laughing Ghoul | 2 | 30 ft. | Medium | undead | chaotic evil |
| Lead Giant | 9 | 40 ft., climb 40 ft. | Huge | giant | chaotic evil |
| Lead Titan | 18 | 40 ft., climb 40 ft. | Gargantuan | giant | chaotic evil |
| Lesion | 3 | 20 ft., fly 10 ft. (hover) | Medium | undead | chaotic evil |
| Lesser Cranium Rat Swarm | 2 | 30 ft. | Medium | monstrosity | neutral evil |
| Lieh's Kitsune | 8 | 40 ft. | Medium | fey | neutral evil |
| Life Slaad | 10 | 30 ft. | Medium | aberration | chaotic good |
| Light Orb | 1 | 0 ft., fly 40 ft. (hover) | Small | elemental | neutral |
| Like Like | 5 | 20 ft. | Large | ooze | unaligned |
| Lindworm | 22 | 50 ft., burrow 20 ft., climb 40 ft. | Gargantuan | dragon | neutral evil |
| Living Armor | 1 | 20 ft. | Medium | ooze | unaligned |
| Living Wall, Variant | 6 | 0 ft. | Huge | undead | chaotic evil |
| Lodestone Marauder | 9 | 30 ft., burrow 20 ft., climb 20 ft. | Large | aberration | unaligned |
| Lolth's Eye | 5 | 30 ft. | Medium | humanoid | chaotic evil |
| Lolth's Finger | 6 | 40 ft. | Medium | humanoid | chaotic evil |
| Lorn-Fluke | 13 | 10 ft., swim 50 ft. | Gargantuan | aberration | chaotic evil |
| Lornest-Fluke | 11 | 10 ft., swim 50 ft. | Gargantuan | aberration | chaotic evil |
| Luminescent Jelly | 1/2 | 10 ft., climb 10 ft. | Medium | ooze | unaligned |
| Lunar Wolf Companion | 7 | 50 ft., swim 30 ft. | Large | monstrosity | lawful neutral |
| Luring Dragon | 8 | 30 ft., climb 30 ft., fly 60 ft. | Large | dragon | neutral evil |
| Maedar | 2 | 30 ft., burrow 30 ft. | Medium | monstrosity | lawful evil |
| Man-Serpent | 6 | 40 ft. | Large | monstrosity | neutral evil |
| Mandibat | 1/4 | 10 ft., fly 40 ft. | Tiny | beast | unaligned |
| Mangler Squig | 5 | 25 ft. | Large | monstrosity | unaligned |
| Mantis Warrior | 1/4 | 35 ft. | Medium | monstrosity | lawful neutral |
| Mantis Youth | 1/8 | 5 ft., fly 25 ft. | Medium | monstrosity | lawful neutral |
| Medusa Snake | 6 | 30 ft., swim 30 ft. | Medium | monstrosity | unaligned |
| Melt Strider | 1/4 | 10 ft., fly 40 ft. | Large | beast | unaligned |
| Mercury Dragon Wyrmling | 1 | 30 ft., climb 30 ft., fly 60 ft. | Medium | dragon | chaotic good |
| Metal Slime | 3 | 30 ft., climb 30 ft. | Medium | ooze | unaligned |
| Mglak | 4 | 30 ft., climb 30 ft. | Medium | undead | neutral evil |
| Mim-like | 3 | 25 ft. | Medium | monstrosity | lawful neutral |
| Mind Brute | 14 | 40 ft. | Large | aberration | lawful evil |
| Mind Flayer Ascetic | 12 | 40 ft. | Medium | aberration | lawful evil |
| Mind Flayer Skeleton | 3 | 30 ft. | Medium | undead | lawful evil |
| Mind Shade | 9 | 0 ft., fly 30 ft. | Medium | undead | chaotic evil |
| Mindflyer | 7 | 20 ft., fly 50 ft. | Medium | aberration | lawful evil |
| Mindseeker | 8 | 30 ft. | Large | aberration | lawful evil |
| Mini Floormaster | 0 | 25 ft. | Tiny | aberration | lawful evil |
| Miniblin | 1/4 | 20 ft., climb 20 ft. | Small | humanoid | chaotic evil |
| Miniblin Captain | 2 | 20 ft., climb 20 ft., swim 20 ft. | Small | humanoid | chaotic evil |
| Minigoblin | 0 | 20 ft. | Tiny | humanoid | lawful evil |
| Mithral Tortoise | 10 | 30 ft., burrow 30 ft., climb 30 ft., swim 25 ft. | Huge | beast | unaligned |
| Mocha Slime | 1 | 10 ft., climb 10 ft. | Small | ooze | unaligned |
| Molten Troll | 7 | 30 ft. | Large | giant | chaotic evil |
| Moon-Miser | 9 | 45 ft., climb 45 ft. | Huge | aberration | unaligned |
| Morgal | 1/8 | 25 ft. | Small | humanoid | lawful evil |
| Moss Knight | 1/4 | 30 ft. | Medium | monstrosity | lawful neutral |
| Mountain Bigfolk | 6 | 40 ft. | Large | giant | neutral |
| Mozgriken | 4 | 25 ft. | Small | aberration | lawful neutral |
| Muk | 4 | 15 ft., climb 15 ft. | Medium | ooze | chaotic evil |
| Mulrak | 1/2 | 20 ft. | Medium | humanoid | neutral evil |
| Mulrak Icon of Brutality | 15 | 30 ft., burrow 20 ft. | Huge | humanoid | neutral evil |
| Mulrak Jewel of Madness | 11 | 30 ft. | Huge | humanoid | neutral evil |
| Mulrak Mindbreaker | 6 | 30 ft. | Large | humanoid | neutral evil |
| Mulrak Stonebreaker | 6 | 30 ft. | Large | humanoid | neutral evil |
| Mushizo Daogui | 3 | 30 ft. | Large | humanoid | chaotic evil |
| Mushizo Wasp | 1/8 | 10 ft., fly 60 ft. | Tiny | beast | unaligned |
| Myoxat | 1 | 30 ft., climb 30 ft., swim 30 ft. | Large | monstrosity | neutral good |
| Necro-knight | 5 | 30 ft. | Medium | humanoid | any non-good alignment |
| Necro-knight Commander | 8 | 30 ft. | Medium | humanoid | any non-good alignment |
| Needleback | 1/2 | 30 ft., climb 30 ft. | Medium | humanoid | chaotic neutral |
| Needleback Slayer of Yurot | 4 | 40 ft., climb 30 ft. | Medium | humanoid | lawful evil |
| Needleback Spike Sorcerer | 4 | 30 ft., climb 30 ft. | Medium | humanoid | chaotic neutral |
| Needleback Warrior | 3 | 30 ft., climb 30 ft. | Medium | humanoid | lawful neutral |
| Nekronaut | 2 | 30 ft. | Small | undead | lawful neutral |
| Neothelid, Variant | 16 | 30 ft., burrow 30 ft. | Gargantuan | aberration | lawful evil |
| Night Dragon | 4 | 30 ft., fly 60 ft. | Medium | dragon | neutral |
| Night Goblin | 1/4 | 30 ft. | Small | humanoid | neutral evil |
| Night Goblin Fanatic | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Night-Robed Pilgrim | 3 | 20 ft., fly 40 ft., swim 60 ft. | Medium | aberration | lawful evil |
| Nightcrawler | 19 | 50 ft., burrow 30 ft. | Gargantuan | undead | chaotic evil |
| Nightmare Dragon | 9 | 40 ft., fly 60 ft. | Large | dragon | neutral evil |
| Nightshade Zombie | 5 | 30 ft. | Medium | undead | lawful evil |
| Nightstriker Serpent | 5 | 30 ft. | Large | monstrosity | neutral evil |
| Nightwalker | 16 | 40 ft. | Huge | undead | chaotic evil |
| Nightwing | 14 | 20 ft., fly 60 ft. | Huge | undead | chaotic evil |
| Nightwing Bat | 4 | 30 ft., fly 90 ft. | Large | monstrosity | neutral evil |
| Nothic Skeleton | 2 | 30 ft. | Medium | undead | lawful evil |
| Nyraala Golem | 3 | 25 ft. | Large | construct | neutral |
| Ogre Bull Priest | 4 | 40 ft. | Large | giant | chaotic evil |
| Ogre Mage | 6 | 40 ft. | Large | giant | chaotic evil |
| Ogre Maneater | 3 | 40 ft. | Large | giant | chaotic neutral |
| Ogre Missionary | 2 | 40 ft. | Large | giant | chaotic evil |
| Ogre Skeleton | 2 | 40 ft. | Large | undead | lawful evil |
| Ogre Storm Shaman | 3 | 40 ft. | Large | giant | chaotic evil |
| Ogre Thinker | 3 | 40 ft. | Large | giant | lawful evil |
| Ogre Warlord | 10 | 40 ft. | Large | giant | chaotic evil |
| Omega Metroid | 21 | 60 ft., climb 30 ft. | Huge | aberration | unaligned |
| Ooldur | 1/8 | 30 ft. | Medium | humanoid | neutral good |
| Ooze, Arcane | 5 | 20 ft., climb 20 ft. | Large | ooze | unaligned |
| Ooze, Spider | 1/4 | 20 ft., climb 20 ft. | Tiny | ooze | unaligned |
| Oozing Champion | 5 | 30 ft., climb 30 ft. | Medium | ooze | chaotic evil |
| Oozing Lord | 12 | 30 ft., climb 30 ft. | Large | ooze | chaotic evil |
| Oozing One | 2 | 20 ft., climb 20 ft. | Medium | ooze | chaotic evil |
| Oracle of Kurtulmak | 5 | 35 ft. | Small | humanoid | lawful evil |
| Orc Big 'Un | 2 | 30 ft. | Medium | humanoid | chaotic evil |
| Orc Brute of Bahgtru | 3 | 35 ft., climb 30 ft. | Large | humanoid | unaligned |
| Orc Godspeaker | 14 | 30 ft. | Medium | humanoid | chaotic evil |
| Orc Impaler | 2 | 30 ft. | Medium | humanoid | chaotic evil |
| Orc Knight of Harlok | 5 | 30 ft. | Medium | humanoid | neutral evil |
| Orc Minion | 1/4 | 30 ft. | Medium | humanoid | chaotic evil |
| Orc Poisoner | 2 | 30 ft. | Medium | humanoid | chaotic evil |
| Orc Savant | 2 | 30 ft. | Medium | humanoid | chaotic neutral |
| Orc Sovereign | 12 | 30 ft. | Medium | humanoid | chaotic evil |
| Orog Devastator | 20 | 50 ft. | Medium | humanoid | chaotic evil |
| Pack of Kobolds | 5 | 30 ft. | Huge | humanoid | lawful evil |
| Palemane Minotaur | 6 | 40 ft. | Large | monstrosity | chaotic evil |
| Palemane Seer | 6 | 40 ft. | Large | monstrosity | chaotic evil |
| Panopticon | 3 | 15 ft. | Large | aberration | chaotic evil |
| Paras | 1/4 | 25 ft. | Tiny | beast | unaligned |
| Parasitical Shell Armor | 5 | 30 ft., climb 20 ft. | Medium | aberration | neutral evil |
| Patchworkman | 4 | 25 ft. | Medium | undead | any evil alignment |
| Phaerlin Giant | 3 | 20 ft. | Huge | giant | neutral evil |
| Phantasm | 10 | 0 ft., fly 60 ft. (hover) | Large | undead | neutral evil |
| Phase Drider | 7 | 30 ft., climb 30 ft. | Large | monstrosity | chaotic evil |
| Pink Slaad | 9 | 30 ft. | Medium | aberration | chaotic good |
| Piranha Plant | 1 | 0 ft. | Medium | plant | chaotic neutral |
| Plague Monk | 1 | 40 ft. | Medium | humanoid | neutral evil |
| Plague Swimmer | 5 | 30 ft., swim 40 ft. | Large | aberration | chaotic evil |
| Plague Zombie | 1/2 | 20 ft. | Medium | undead | neutral evil |
| Plasmoid Warlock of Juiblex | 7 | 30 ft. | Medium | ooze | chaotic evil |
| Pneumania | 2 | 20 ft., fly 20 ft. (hover) | Small | plant | unaligned |
| Possessed Ooze Knight | 13 | 25 ft., climb 25 ft. | Large | ooze | neutral evil |
| Primal Warden | 3 | 30 ft. | Medium | humanoid | any alignment |
| Prismatic Cube | 5 | 15 ft. | Large | ooze | unaligned |
| Pseudonatural Troll | 12 | 60 ft. | Large | aberration | chaotic evil |
| Psyche Worm | 11 | 30 ft., burrow 30 ft. | Large | aberration | neutral evil |
| Psychoraptor | 1 | 50 ft. | Medium | aberration | lawful evil |
| Psychoraptor Alpha | 3 | 50 ft. | Medium | aberration | lawful evil |
| Purple Dragon Wyrmling | 2 | 30 ft., climb 30 ft., fly 60 ft. | Medium | dragon | lawful evil |
| Purple Pikmin | 0 | 30 ft. | Tiny | plant | unaligned |
| Pyrogodon | 12 | 40 ft., burrow 40 ft., climb 40 ft. | Huge | elemental | chaotic evil |
| Pyrogodon Suzerain | 20 | 40 ft., burrow 40 ft., climb 40 ft. | Huge | elemental | chaotic evil |
| Quaggoth Zombie | 2 | 30 ft., climb 30 ft. | Medium | undead | neutral evil |
| Quaggoth, Variant | 20 | 35 ft., climb 25 ft. | Huge | aberration | unaligned |
| Queen Metroid | 26 | 40 ft. | Gargantuan | aberration | unaligned |
| Quill Scarab | 1/4 | 20 ft., climb 20 ft., swim 20 ft. | Small | beast | unaligned |
| Radiant Shardling | 3 | 5 ft., fly 30 ft. (hover) | Tiny | elemental | lawful good |
| Rancid One | 3 | 10 ft., climb 10 ft. | Medium | ooze | chaotic evil |
| Rat Guard | 1 | 30 ft. | Medium | humanoid | neutral |
| Rat Ogre | 6 | 40 ft. | Large | monstrosity | neutral evil |
| Rat Warrior | 3 | 30 ft. | Medium | humanoid | neutral |
| Reanimated Meat | 4 | 30 ft. | Medium | undead | chaotic evil |
| Red Pikmin | 0 | 30 ft. | Tiny | plant | unaligned |
| Redead | 3 | 15 ft. | Medium | undead | chaotic evil |
| Redead Knight | 6 | 20 ft. | Medium | undead | chaotic evil |
| Reflective Ooze | 10 | 20 ft., climb 20 ft. | Large | ooze | unaligned |
| Rock Pikmin | 0 | 30 ft. | Tiny | plant | unaligned |
| Rotbringer | 19 | 30 ft., fly 60 ft. | Medium | undead | chaotic evil |
| Ruin Chanter | 14 | 40 ft., fly 40 ft. (hover) | Medium | fey | chaotic neutral |
| Rust Monster Skeleton | 1/4 | 10 ft. | Medium | undead | neutral evil |
| Rust Strider | 1/2 | 30 ft., climb 20 ft. | Large | aberration | neutral |
| Saltor | 1 | 25 ft., climb 25 ft. | Small | aberration | neutral |
| Saproling | 1/4 | 40 ft. | Small | plant | unaligned |
| Scolomorph | 5 | 60 ft. | Large | monstrosity | lawful evil |
| Scorn-Fluke | 17 | 10 ft., swim 50 ft. | Gargantuan | aberration | chaotic evil |
| Seer | 0 | 0 ft., fly 80 ft. (hover) | Small | celestial | neutral good |
| Shadar-kai Mirth Thief | 10 | 30 ft. | Medium | humanoid | chaotic evil |
| Shade Rat | 1/2 | 40 ft. | Medium | beast | unaligned |
| Shadow Cat | 1/2 | 40 ft., climb 30 ft. | Tiny | beast | unaligned |
| Shadow Elemental | 5 | 0 ft., fly 60 ft. (hover) | Large | elemental | chaotic neutral |
| Shadow Eye | 2 | 15 ft. | Small | aberration | lawful evil |
| Shadow Heartless, Variant | 1/8 | 30 ft. | Small | fiend | chaotic evil |
| Shadow Keese | 1/8 | 5 ft., fly 30 ft. (hover) | Tiny | fiend | unaligned |
| Shadow Kobold | 2 | 30 ft. | Small | humanoid | chaotic evil |
| Shadow Queen | 7 | 40 ft. | Medium | undead | chaotic evil |
| Shadow Snatcher | 7 | 30 ft. | Medium | monstrosity | chaotic evil |
| Shadow Soldier, Rank 1 | 1/2 | 30 ft. | Medium | undead | lawful neutral |
| Shadow Soldier, Rank 2 | 2 | 30 ft. | Medium | undead | lawful neutral |
| Shadow Soldier, Rank 3 | 3 | 30 ft. | Medium | undead | lawful neutral |
| Shadow Soldier, Rank 4 | 6 | 40 ft. | Large | undead | lawful neutral |
| Shadow Soldier, Rank 5 | 9 | 40 ft. | Large | undead | lawful neutral |
| Shadow Witch | 2 | 40 ft. | Medium | undead | chaotic evil |
| Shadowpriest Kollector | 10 | 15 ft., fly 60 ft. (hover) | Medium | humanoid | chaotic neutral |
| Shadowpriest Torturemage | 10 | 30 ft., fly 60 ft. (hover) | Medium | humanoid | chaotic neutral |
| Shardling | 1/2 | 5 ft., fly 30 ft. (hover) | Tiny | elemental | lawful good |
| Shifting Jelly | 5 | 10 ft., climb 10 ft. (30 ft. in humanoid or hybrid form) | Medium | ooze | chaotic evil |
| Shikki-Gaki | 1 | 20 ft., burrow 10 ft. | Medium | undead | neutral evil |
| Shoggoth | 13 | 30 ft., swim 30 ft. | Huge | aberration | chaotic neutral |
| Siege Crab | 14 | 60 ft., swim 60 ft. | Gargantuan | monstrosity | unaligned |
| Silent Spider | 1/4 | 20 ft., climb 20 ft. | Tiny | beast | unaligned |
| Skaven Eshin Assassin | 9 | 40 ft., climb 30 ft. | Medium | humanoid | neutral evil |
| Skaven Grey Seer | 13 | 40 ft. | Medium | humanoid | neutral evil |
| Skaven Gutter Runner | 2 | 40 ft. | Medium | humanoid | neutral evil |
| Skaven Night Runner | 1 | 40 ft. | Medium | humanoid | neutral evil |
| Skaven Sharpshooter | 1 | 40 ft. | Medium | humanoid | neutral evil |
| Skeleton Commoner | 0 | 30 ft. | Medium | Undead | Neutral |
| Skull Beast | 6 | 40 ft., climb 30 ft. | Large | beast | unaligned |
| Sleeper-Agent | 3 | 30 ft. | Medium | aberration | lawful evil |
| Slimy Dragon | 16 | 40 ft., fly 40 ft. (see Stuck below) | Huge | dragon | unaligned |
| Slugcat | 1/8 | 30 ft., climb 30 ft., swim 20 ft. | Tiny | beast | any alignment |
| Snappergeist | 6 | 15 ft., fly 30 ft. (hover) | Large | undead | unaligned |
| Snithernash | 3 | 40 ft., climb 20 ft. | Large | monstrosity | any chaotic alignment |
| Snotling | 0 | 20 ft. | Tiny | humanoid | neutral evil |
| Sorrow-Spider | 1/2 | 30 ft., climb 30 ft. | Small | aberration | lawful evil |
| Soul Scorcher | 6 | 0 ft., fly 60 ft. (hover) | Medium | undead | neutral evil |
| Spawn of Gia | 6 | 30 ft. | Large | giant | chaotic evil |
| Spider Daedra | 6 | 40 ft., climb 40 ft. | Large | fiend | chaotic evil |
| Spider Dragon | 15 | 50 ft., climb 50 ft. | Large | dragon | neutral evil |
| Spider-Council | 7 | 20 ft., climb 20 ft. | Large | aberration | lawful evil |
| Spidercult Drudge | 5 | 30 ft., climb 30 ft. | Large | humanoid | any non-good alignment |
| Spidercult Lash of Lolth | 7 | 30 ft. | Medium | humanoid | any non-good alignment |
| Spidercult Venomancer | 6 | 30 ft. | Medium | humanoid | any non-good alignment |
| Spiderling | 1/4 | 30 ft. | Medium | fiend | chaotic evil |
| Spidersnake | 6 | 30 ft., climb 40 ft., swim 20 ft. | Large | monstrosity | neutral evil |
| Spirit Reaper | 3 | 30 ft. | Medium | undead | neutral evil |
| Spyder-Fiend | 8 | 40 ft., climb 40 ft. | Large | fiend | chaotic evil |
| Spytrap | 0 | 0 ft. | Large | plant | unaligned |
| Stalchampion | 9 | 40 ft. | Huge | undead | chaotic evil |
| Stalmaster | 8 | 40 ft. | Medium | undead | chaotic evil |
| Starved Man | 4 | 40 ft., climb 30 ft. | Medium | monstrosity | any non-lawful alignment |
| Stone Giant Cavern Stalker | 11 | 40 ft., burrow 40 ft. | Huge | giant | neutral |
| Stone Pebblit | 4 | 20 ft. | Small | elemental | neutral |
| Stone Talus | 12 | 20 ft. | Huge | elemental | neutral |
| Stone Titan | 16 | 40 ft. | Gargantuan | giant | neutral |
| Stoneborn | 2 | 30 ft. | Medium | humanoid | lawful evil |
| Stoneborn Exalted | 19 | 30 ft. | Medium | elemental | lawful evil |
| Stoneborn Granite | 7 | 30 ft. | Medium | humanoid | lawful evil |
| Stonefin | 6 | 0 ft., burrow 40 ft., swim 40 ft. | Large | elemental | neutral |
| Stormvermin | 2 | 40 ft. | Medium | humanoid | neutral evil |
| Swarm of Bloodbloaters | 1/4 | 5 ft., swim 15 ft. | Medium | ooze | unaligned |
| Swarm of Chorister Bees | 8 | 10 ft., fly 40 ft. | Huge | beast | unaligned |
| Swarm of Corpse Worms | 1/2 | 10 ft., burrow 10 ft., climb 10 ft., swim 40 ft. | Medium | beast | unaligned |
| Swarm of Minigoblins | 1/4 | 20 ft. | Medium | humanoid | lawful evil |
| Swarm of Radiant Shardlings | 4 | 5 ft., fly 30 ft. (hover) | Medium | elemental | lawful good |
| Swarm of Shardlings | 3 | 5 ft., fly 30 ft. (hover) | Medium | elemental | lawful good |
| Swarm of Spitting Spiders | 5 | 30 ft., climb 30 ft. | Medium | beast | chaotic evil |
| Swarm of Tainted Shardlings | 4 | 5 ft., fly 30 ft. (hover) | Medium | elemental | chaotic evil |
| Swarming Slime | 1 | 20 ft., climb 20 ft. | Small | ooze | unaligned |
| Sword Spider | 5 | 30 ft., climb 30 ft. | Large | beast | unaligned |
| Tainted Shardling | 3 | 5 ft., fly 30 ft. (hover) | Tiny | elemental | chaotic evil |
| Talpian | 2 | 25 ft., burrow 40 ft., swim 30 ft. | Small | humanoid | lawful neutral |
| Tanarukk Warchief | 8 | 30 ft. | Medium | fiend | chaotic evil |
| Tanarukk Warlord | 14 | 30 ft. | Medium | fiend | chaotic evil |
| Tektite | 1/4 | 30 ft., climb 30 ft. | Medium | beast | unaligned |
| Templar | 5 | 20 ft., climb 20 ft., swim 40 ft. | Large | aberration | chaotic evil |
| Terror Slime | 21 | 45 ft., climb 35 ft. | Gargantuan | ooze | chaotic evil |
| Terrorgheist | 13 | 25 ft., fly 80 ft. | Huge | undead | neutral evil |
| The Apathy | 3 | 20 ft. | Medium | monstrosity | neutral evil |
| The Keeper | 5 | 30 ft., fly 30 ft. | Medium | humanoid | neutral evil |
| The Warden | 14 | 50 ft., burrow 20 ft. | Large | monstrosity | unaligned |
| Thermovile | 5 | 30 ft., climb 25 ft. | Medium | monstrosity | unaligned |
| Thessalhydra | 18 | 40 ft. | Huge | monstrosity | neutral |
| Thoqqua | 2 | 30 ft., burrow 20 ft. | Medium | beast | unaligned |
| Thoul | 1 | 30 ft. | Medium | humanoid | neutral evil |
| Tlincalli Diviner | 7 | 40 ft., burrow 20 ft. | Large | monstrosity | neutral evil |
| Tlincalli Swarmlord | 10 | 40 ft., burrow 20 ft. | Huge | monstrosity | neutral evil |
| Torch Slug | 1/8 | 20 ft., climb 20 ft. | Small | ooze | unaligned |
| Trinexx | 17 | 40 ft., swim 40 ft. | Gargantuan | dragon | neutral evil |
| Troll Mystic | 6 | 30 ft. | Large | giant | chaotic evil |
| Trollcow | 5 | 30 ft. | Large | monstrosity | unaligned |
| Trolloc | 2 | 35 ft. | Medium | humanoid | chaotic evil |
| Trow | 13 | 40 ft. | Huge | giant | neutral |
| Trow Iron Warrior | 20 | 30 ft. | Huge | giant | neutral evil |
| Trow Priest of Nyx | 14 | 35 ft. | Huge | giant | neutral evil |
| Tyrant Moth | 17 | 20 ft., fly 80 ft. | Gargantuan | beast | unaligned |
| Tzakandi | 6 | 30 ft. | Medium | aberration | lawful evil |
| Umbral Stalker | 8 | 30 ft. | Large | monstrosity | chaotic evil |
| Undeparted | 18 | 30 ft., fly 50 ft. | Huge | undead | chaotic evil |
| Undying | 15 | 30 ft. | Medium | undead | neutral evil |
| Unelemental | 6 | 0 ft., fly 60 ft. (hover) | Large | elemental | neutral |
| Vampire Dwarf | 8 | 25 ft. | Medium | undead | lawful evil |
| Vampire Gnome | 6 | 30 ft. | Small | undead | neutral evil |
| Veil Wurm | 17 | 40 ft., burrow 30 ft., fly 50 ft. | Huge | dragon | chaotic evil |
| Verdant Wurm | 19 | 50 ft., burrow 30 ft., fly 40 ft. | Huge | dragon | chaotic evil |
| Vicious Wurm | 7 | 40 ft., burrow 30 ft., fly 30 ft. | Large | dragon | chaotic evil |
| Vitriolic Wurm | 16 | 50 ft., burrow 30 ft., fly 30 ft., swim 50 ft. | Huge | dragon | chaotic evil |
| Volcanic Wurm | 19 | 50 ft., burrow 30 ft., fly 30 ft. | Huge | dragon | chaotic evil |
| Voltage Wurm | 20 | 50 ft., burrow 40 ft., fly 30 ft. | Huge | dragon | chaotic evil |
| Wailing Hermit | 4 | 0 ft., fly 40 ft. (hover) | Large | undead | chaotic evil |
| Wallmaster | 1/2 | 30 ft. | Medium | aberration | lawful neutral |
| War Troll | 12 | 30 ft. | Large | giant | lawful evil |
| Warlock of the Hexblade | 6 | 30 ft. | Medium | humanoid | any alignment |
| Warlock of the Undead | 2 | 30 ft. | Medium | humanoid | any alignment |
| Warrior, Kobold | 1 | 30 ft. | Small | humanoid | lawful evil |
| Watcher | 1/2 | 30 ft. | Medium | humanoid | lawful evil |
| Watcher Knight | 3 | 20 ft. | Large | monstrosity | lawful neutral |
| Web Drake | 5 | 40 ft., climb 40 ft., fly 40 ft. | Large | dragon | neutral |
| Werebat | 5 | 30 ft. (20 ft., fly 50 ft. in bat or hybrid form) | Medium | humanoid | neutral evil |
| Werebat Lord | 16 | 30 ft. (20 ft., fly 90 ft. in hybrid form) | Medium | humanoid | neutral evil |
| Werespider | 4 | 30 ft. (30 ft., climb 30 ft. in spider or hybrid form) | Medium | humanoid | neutral evil |
| Whip Rachis | 1/8 | 40 ft., climb 40 ft. | Small | aberration | chaotic evil |
| White Pikmin | 0 | 30 ft. | Tiny | plant | unaligned |
| Wight King | 9 | 30 ft. | Medium | undead | lawful evil |
| Wight Tyrant | 8 | 30 ft. | Medium | undead | neutral evil |
| Winged Goblin | 1/2 | 20 ft., fly 40 ft. | Small | humanoid | neutral evil |
| Witness | 23 | 0 ft., fly 50 ft. (hover) | Huge | aberration | chaotic neutral |
| Wobbuffet | 3 | 30 ft. | Medium | aberration | neutral good |
| Wolfbat | 1/2 | 40 ft., fly 40 ft. | Medium | monstrosity | unaligned |
| Wrigglegeist | 2 | 20 ft., fly 20 ft. (hover) | Tiny | undead | unaligned |
| Wurm Hydra | 24 | 60 ft., burrow 50 ft., fly 50 ft. | Gargantuan | dragon | chaotic evil |
| Xalitik | 7 | 30 ft., fly 60 ft. | Large | fiend | neutral evil |
| Xalitik Flaremaster | 17 | 30 ft., fly 60 ft. | Large | fiend | neutral evil |
| Xavi | 15 | 40 ft., climb 40 ft. | Large | aberration | chaotic neutral |
| Xenogmir | 7 | 30 ft., burrow 30 ft. | Large | monstrosity | neutral evil |
| Xorn Crusthide | 17 | 20 ft., burrow 20 ft. | Large | elemental | neutral |
| Yaggol | 8 | 30 ft. | Large | aberration | lawful evil |
| Yellow Keaton | 2 | 40 ft. | Medium | humanoid | chaotic evil |
| Yellow Pikmin | 0 | 30 ft. | Tiny | plant | unaligned |
| Yezzogaunt | 13 | 0 ft., fly 40 ft. (hover) | Huge | aberration | neutral |
| Yitsan | 7 | 60 ft., burrow 30 ft., swim 60 ft. | Large | monstrosity | unaligned |
| Young Dalasmir | 5 | 10 ft., burrow 30 ft., fly 30 ft. (hover) | Medium | monstrosity | neutral evil |
| Young Grimlock | 0 | 30 ft. | Small | humanoid | neutral |
| Young Mercury Dragon | 7 | 40 ft., climb 40 ft., fly 80 ft. | Large | dragon | chaotic good |
| Young Purple Dragon | 8 | 40 ft., climb 40 ft., fly 80 ft. | Large | dragon | lawful evil |
| Zarogmir | 8 | 10 ft., burrow 30 ft., fly 30 ft. (hover) | Large | monstrosity | neutral evil |
| Zaukharai | 5 | 40 ft. | Large | monstrosity | neutral evil |
| Zerfallen Cavern Goblin | 1/2 | 30 ft. | Small | humanoid | neutral evil |
| Zeta Metroid | 16 | 50 ft., climb 50 ft. | Large | aberration | unaligned |
| Zombie, Kobold | 1/4 | 20 ft. | Small | undead | neutral evil |
Incomplete Underdark Monsters
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