Behemoth Bash (move)

	Behemoth Bash; きょじゅうだん Behemoth Impact
Type	Steel
Category	Physical
PP	5 (max. 8)
Power	100
Accuracy	100%
Priority	0
	Makes contact; Affected by Protect; Not affected by Magic Coat; Not affected by Snatch; Affected by Mirror Move; Affected by King's Rock;
	Normal: May affect anyone adjacent to the user
Introduced	Generation VIII
	Not a TM, TR, HM, or Move Tutor move.;
Condition	[[{{{category}}} (condition)\|{{{category}}}]]
Appeal	0
Jam	0
Condition	[[{{{category}}} (condition)\|{{{category}}}]]
Appeal	0
Condition	[[{{{category}}} (condition)\|{{{category}}}]]
Appeal	0
Jamming	0
	On Smogon's Movedex: Generation VIII; Generation IX; ;

Behemoth Bash (Japanese: きょじゅうだん Behemoth Impact) is a damage-dealing Steel-type move introduced in Generation VIII. It is the signature move of Zamazenta.

Effect

Behemoth Bash deals damage. If the target is Dynamaxed or Gigantamaxed, its damage is doubled. The bonus does not apply to Eternamax Eternatus, despite its similarities to a Gigantamaxed Pokémon.

Generation VIII

Pokémon Brilliant Diamond and Shining Pearl

Behemoth Bash cannot be selected in a battle.

Generation IX

As there is no Dynamax mechanic in Generation IX, Behemoth Bash now deals damage with no secondary effect.

Description

Games	Description
SwSh LA	The user becomes a gigantic shield and slams into the target. This move deals twice the damage if the target is Dynamaxed.
BDSP	This move can't be used. It's recommended that this move is forgotten. Once forgotten, this move can't be remembered.
SV	The user's body becomes a firm shield and slams into the target fiercely.

Learnset

Special move

If Zamazenta knows Iron Head while entering battle in its Crowned Shield form, Iron Head will become Behemoth Bash for the duration of the battle.

Generation VIII onward

#	Pokémon		Types	Egg Groups		Obtained with
0889		Zamazenta Crowned Shield		No Eggs Discovered		No Eggs Discovered	Rusted Shield^SwSh^SV
Bold indicates a Pokémon gains STAB from this move. Italics indicates a Pokémon whose Evolution or alternate form receives STAB from this move. A dash (−) indicates a Pokémon cannot learn the move by the designated method. An empty cell indicates a Pokémon that is unavailable in that game/generation.

In other games

In Pokémon GO, Behemoth Bash is a Charged Attack that debuted on May 29, 2025. It replaces Iron Head when Zamazenta transforms from its Hero of Many Battles form into its Crowned Shield form. Behemoth Bash can also be used in Max Battles as a Max Move, and can be leveled up as one. Behemoth Bash can't be replaced with another move using Charged TMs. Its Adventure Effect outside of battle, which became available on June 24, 2025, will reduce the damage taken by Pokémon by 10% during Raids and by 5% during Max Battles. It costs 5,000 Stardust and 5 Zamazenta Candy, and lasts 6 minutes.

Behemoth Bash

Charged Attack

Gyms & Raids

Power

125

Energy cost

50

Duration

1.50 seconds

Damage window

1.40 seconds

Trainer Battles

Power

80

Energy cost

45

Max Battles
Power	Level 1: 250 Level 2: 300 Level 3: 350

Eligible Pokémon:

Standard eligibility

Pokémon Masters EX

Name	Category	Move gauge cost	MP (uses)	Base power	Max power	Accuracy	Target	Effect tag(s)	Additional effect(s)	Playable sync pair(s)
Behemoth Bash	Physical	4	—	144	172	100%	An opponent	—	This attack's power increases 50% when the target has a sync buff.	Hop & Zamazenta
Sync move(s)
Name	Category	State		Base power	Max power	Target		Effect tag	Additional effect(s)	Playable sync pair
Big Dreams Behemoth Bash	Physical	Default		200	240	An opponent		—	This move's power increases when the target has a sync buff.	Hop & Zamazenta
		6★ EX							The sync buff is doubled the first time a sync move is used.
		6★ EX with EX role							The first time the user's sync move is used each battle, the sync move countdown is reduced by three.

Notes:

Behemoth Bash:
- Description prior to Version 2.20.0 (released on April 27, 2022): This move's power increases 50% when the target has a sync buff.
Big Dreams Behemoth Bash:
- This sync move could not be raised to 6★ EX until July 14, 2023—1 year, 11 months, 2 days after its release date (on August 12, 2021).
- Description prior to Version 2.20.0 (released on April 27, 2022): This move's power increases when the target has a sync buff.

In animation

Pokémon animated series

Pokémon	Method
Preparing Crowned Shield Zamazenta
The user's body becomes a firm shield and slams into the target fiercely.
User	First Used In	Notes
	Crowned Shield Zamazenta extends the shield on its chest and glows red. It then rams into the opponent with its shield.
Zamazenta (anime)	Sword and Shield... The Legends Awaken!	Debut

Pokémon Evolutions

Pokémon	Method
Preparing Crowned Shield Zamazenta
The user's body becomes a firm shield and slams into the target fiercely.
User	First Used In	Notes
	Crowned Shield Zamazenta extends the shield on its chest and glows red. It then rams into the opponent with its shield.
A wild Zamazenta	The Champion	Debut

In the manga

Pokémon Adventures

Pokémon	Method
Crowned Shield Zamazenta
The user's body becomes a firm shield and slams into the target fiercely.
User	First Chapter Used In	Notes
	Crowned Shield Zamazenta extends the shield on its chest. It then rams its body into the opponent.
A wild Zamazenta	PASS43	Debut

In other generations

Core series games

Generation I	RB Y	Generation I (Japanese)	Generation I (international)	Generation II	Generation II (Japanese)	Generation II (international)	Crystal	Generation III	Generation III (Japanese)	Generation III (international)	RS	FRLG	FRLG E	Generation IV	Generation IV (Japanese)	Generation IV (international)	Pt HGSS	HGSS	Generation V	BW	B2W2	Generation V (Japanese)	Generation V (international)	Generation VI	XY	ORAS	Generation VII	SM USUM	LGPE	Generation VIII	SwSh	BDSP	Legends: Arceus	Generation IX	Stadium (JP)	Stadium	Stadium 2	Colosseum	XD	Battle Revolution	Battrio	MD: Red and Blue	MD: Time, Darkness, and Sky	MD: Blazing, Stormy, & Light Adventure Squad	MD: GTI	SMD	MD: RTDX	Rumble	Rumble Blast	Masters EX

Spin-off series games

Generation I	RB Y	Generation I (Japanese)	Generation I (international)	Generation II	Generation II (Japanese)	Generation II (international)	Crystal	Generation III	Generation III (Japanese)	Generation III (international)	RS	FRLG	FRLG E	Generation IV	Generation IV (Japanese)	Generation IV (international)	Pt HGSS	HGSS	Generation V	BW	B2W2	Generation V (Japanese)	Generation V (international)	Generation VI	XY	ORAS	Generation VII	SM USUM	LGPE	Generation VIII	SwSh	BDSP	Legends: Arceus	Generation IX	Stadium (JP)	Stadium	Stadium 2	Colosseum	XD	Battle Revolution	Battrio	MD: Red and Blue	MD: Time, Darkness, and Sky	MD: Blazing, Stormy, & Light Adventure Squad	MD: GTI	SMD	MD: RTDX	Rumble	Rumble Blast	Masters EX

Trivia

Behemoth Bash and Behemoth Blade were formerly not present in the mobile version of Pokémon HOME's move Pokédex, as they are the signature moves of Crowned Shield Zamazenta and Crowned Sword Zacian (which are forms that appear only in battles and, therefore, cannot be deposited into HOME) and cannot be learned by a Smeargle via Sketch, as it is not present in Pokémon Sword and Shield. With the addition of Smeargle to Pokémon Scarlet and Violet, the former four moves were finally added to Pokémon HOME.
- This distinction is shared with Glacial Lance and Astral Barrage for the same reasoning, as well as Struggle and Light of Ruin, both of which cannot be legitimately learned by any Pokémon.

In other languages

Language		Title
Chinese	Cantonese	巨獸彈 Geuihsau Daahn
Chinese	Mandarin	巨獸彈 / 巨兽弹 Jùshòu Dàn
French		Aegis Maxima
German		Gigantenstoß
Hindi		बहीमथ बैश Behemoth Bash
Indonesian		Hentakan Behemoth
Italian		Colpo Maestoso
Korean		거수탄 Geosu Tan
Brazilian Portuguese		Pancada Colossal
Russian		Удар Левиафана Udar Leviafana
Spanish	Latin America	Golpe Supremo
Spanish	Spain	Embate Supremo
Thai		โล่ทะลวงยักษ์ Lo Thaluang Yak
Turkish		Devasa Ezme

Spin-off series games

Pokémon Masters EX

Big Dreams Behemoth Bash

Language		Title
Japanese		誇りを胸に夢をつかむきょじゅうだん Hokori o Mune ni Yume o Tsukamu Kyojūdan
Mandarin Chinese		胸懷榮譽抓住夢想之巨獸彈 Xiōnghuái Róngyù Zhuāzhù Mèngxiǎng zhī Jùshòudàn
French		Mon vrai rêve ! Aegis Maxima !
German		Gigantenstoß der Selbstfindung
Italian		Colpo Maestoso per realizzare i sogni
Korean		긍지를 품고 꿈을 손에 넣는 거수탄 Geungji-reul Pumgo Kkum-eul Son-e Neonneun Geosutan
Spanish		Embate Supremo de los Sueños Propios

Variations of the move Dynamax Cannon

	Behemoth Blade •
	Dynamax Cannon

This article is part of Project Moves and Abilities, a Bulbapedia project that aims to write comprehensive articles on two related aspects of the Pokémon games.