A Key (Japanese: カギKey) is an item that can be used to open Locked Chambers in dungeons in the Pokémon Mystery Dungeon series. These Chambers need to be opened with a key; other means of entering (Rock Smash, Mobile Scarf) do not allow access to the Chamber. They are generally rare and difficult to obtain, usually appearing in later dungeons as a random floor item, or bought from Kecleon Shops.
A key to open a red door. It disappears once you open a door.
List of items found in chambers
Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team
In Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team, the Key is used to open chambers appearing on set floors of certain dungeons in order to gain rare items that are usually otherwise unobtainable, such as HMs, Friend Bows and Wish Stones. It is consumed after use.
Pokémon Mystery Dungeon: Explorers of Time, Darkness, and Sky
The key is once again used to open chambers appearing on set floors of certain dungeons. Most of the items locked inside them in these games are rare exclusive items not found anywhere else:
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Green locked door
Red locked door
Merchandise
Pokémon Mystery Dungeon Explorers of Time and Darkness Diorama Figure Collection Chimchar
A Key has been featured on the base of the Chimchar figure of the three-piece Explorers of Darkness Diorama Figure Collection by Takara Tomy; just like in the Explorers of Darkness box art the figure set is based on.
This article is part of both Project Sidegames and Project ItemDex, Bulbapedia projects that, together, aim to write comprehensive articles on items in the sidegames.