|Universe||Super Smash Bros.|
A Key (カギ Kagi) is an item in Super Smash Bros. Brawl, specifically in The Subspace Emissary. True to their nature, they are used to unlock various doors encountered in the mode - if a character carrying a key touches a locked door, or the key is thrown at a door, it will be opened. Keys can also be thrown at enemies to do a decent amount of damage. If a key is broken by being dropped or thrown, it will reappear wherever it was originally found.
Keys loosely resemble the Small Keys in Twilight Princess, with added colours and light effects.
 Trophy Info
In The Subspace Emissary, there are often locked doors. This key is the item you need to unlock these doors. You can touch a door while holding the key, or you can even throw the key at a door to unlock it. If you lose the key, it will return to the place you originally found it. This item is vital to your progress, so do your best not to lose it.
Items in Super Smash Bros. Brawl
|Normal||Assist Trophy · Banana Peel · Beam Sword · Blast Box · Bob-omb · Bumper · Bunny Hood · Cracker Launcher · Deku Nut · Dragoon · Fan · Fire Flower · Food · Franklin Badge · Freezie · Golden Hammer · Gooey Bomb · Green Shell · Hammer · Heart Container · Home-Run Bat · Hothead · Lightning Bolt · Lip's Stick · Maxim Tomato · Metal Box · Motion-Sensor Bomb · Mr. Saturn · Pitfall · Poison Mushroom · Poké Ball · Ray Gun · Screw Attack · Smart Bomb · Smash Ball · Smoke Ball · Soccer Ball · Spring · Star Rod · Starman · Super Mushroom · Super Scope · Superspicy Curry · Team Healer · Timer · Unira · Warp Star|
|Containers||Barrel · Capsule · Crate · Party Ball · Sandbag · Rolling Crates|
|Key · Stock Ball · Trophy Stand|
|Collectibles||CD · Coins · Sticker · Trophy|
|Other||Smash Coins and Bills|