Boss Key

A Boss Key is an item in Donkey Kong 64. There are 8 boss keys in total, all obtained by defeating a level boss, with the exception of the eighth, which is found at the end of Hideout Helm. The bosses of each level are accessed by the Troff and Scoff rooms and the final one can only be accessed if the player has obtained both the Nintendo Coin and Rareware Coin. The boss keys are used to help free K. Lumsy, resulting in opening new levels and completing the game.

Types

 * The different boss keys open different areas of the world:
 * Key 1 opens Angry Aztec
 * Key 2 opens Frantic Factory and Gloomy Galleon
 * Key 4 opens Fungi Forest
 * Key 5 opens Crystal Caves and Creepy Castle
 * Keys 6 and 7 opens Hideout Helm
 * Keys 3 and 8 spawn Crocodile Isle

Trivia

 * Oddly, only the Gloomy Galleon boss key is required to open the path to Fungi Forest.
 * Grabbing Key 8 in a certain manner can cause it to not be saved to the inventory; however, if the player revisits Hideout Helm, it will respawn.