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B. Locker is a grouchy signpost that appears in Donkey Kong 64. His name is a pun on "blocker", and as B. Locker's name suggests, he prevents the Kongs from entering a portal to a level unless they have enough Golden Bananas.
B. Locker is first encountered by Donkey Kong in the Jungle Japes lobby, where B. Locker reveals that he is unhappily working for King K. Rool, or else he would be punished (by "the big sawmill in the sky").
B. Locker is a wooden signpost with a pair of eyes, a nose, dark brown eyelids, and two light brown arms with two red hands. B. Locker is attached to the ground by a small, metal pole. He usually crosses his arms. A picture of bananas are attached to his forehead.
There are three panels on B. Locker's chest, and each one displays a number. The number displayed on the panels represents the minimum number of Golden Bananas that the Kongs need to access a level.
A different number of Golden Bananas are required per each level. The later levels have a higher requirement than the earlier ones. If the Kongs have enough Golden Bananas, they can approach B. Locker, who then spins around and permanently leaves the lobby.