Krunch is a Kremling and member of the Kremling Krew, he is also an ally of Diddy Kong. Krunch's first appearance is in the game Diddy Kong Racing. Here, Krunch is sent by King K. Rool to investigate why Diddy Kong and several of his friends are at Timber's Island, and to see if they are hatching some sort of anti-Kremling plot. Instead of antagonizing Diddy and his friends though, Krunch ends up aiding them in their battle against the evil alien hog, Wizpig. Krunch has the worst acceleration and handling in the game, but has a very high top speed, making him the third-fastest racer. Krunch's top speed without bananas is 60 mph.
Krunch makes a reappearance in Diddy Kong Racing DS; he seems to have somewhat of a bullying attitude in this game. Krunch is left relatively unchanged from the N64 version, but his changes are a small boost in his turning and acceleration, along with a small drop in top speed. In the intro, Krunch is seen with another Kritter, who shares the same model as Krunch, as he decides to spy on Diddy.