Key (Mystery Dungeon)

A Key (Japanese: カギ Key) is an item that can be used to unlock doors in dungeons in the Pokémon Mystery Dungeon series. They are generally rare and difficult to obtain, usually appearing in later dungeons as a random floor item, or bought from Kecleon Shops.

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, s and Wish Stones. It is consumed after use.

Items obtainable with Keys are:
 * HM (Buried Relic, 80F)
 * HM (Solar Cave, 10F)
 * HM (Buried Relic, 70F)
 * HM (Wyvern Hill, 30F)
 * HM (Buried Relic, 45F)
 * HM (Solar Cave, 15F)
 * (Western Cave, 59F)
 * (Mt. Faraway, 30F)
 * (Northwind Field, 20F)
 * (Wyvern Hill, 20F)
 * TM (Far-off Sea, 50F)
 * TM (Far-off Sea, 72F)

Trivia

 * Issue #28 of hints that Keys can be found in the Desert Region.

In other languages
Clé (Pokémon Donjon Mystère) Chiave カギ (ダンジョン)