In the backstory for Diddy Kong Racing, provided in the instruction manual, Krunch was one of two "Kremling spies" sent by King K. Rool to investigate why Diddy Kong and his friends are at Timber's Island, with fears they could be plotting against the Kremlings. According to the game's backstory, the Kremling spies watched Diddy Kong "tearing off at high speed through the jungle" from behind a boulder, before Krunch suggests to the other Kremling that they should follow him. The Kremling declines the suggestion and "bolted into the undergrowth", to which Krunch decided to follow Diddy Kong alone. Instead of antagonizing them, Krunch ends up teaming up alongside Diddy and friends, helping the racers on their journey to expel Wizpig from Timber's Island. The instruction manual states that, despite offering to help Diddy Kong and his friends, the cast of the game does not trust him.