Bearserk appears in the fifth and final board, Celebration Avenue, as the boss of the stage. Bearserk starts out as a teddy bear who sits behind a wall. In front of the wall, there is a plate of jelly beans. As the players pass by the wall, they each take a jelly bean. When all the jelly beans are eaten, Bearserk grows enraged, revealing its robotic components, which include six sharp claws.