Clumph

The Clumph are rat-like, primitive species that live in the outskirts of the Beanbean Kingdom atop Joke's End. These creatures are highly territorial, and attack any intruders with their clubs. Clumphs are weak against the Firebrand technique; a Clumph may run away from battle if its hair (or wig) is set on fire. Nonetheless, a Clumph is a very powerful opponent, and usually fights to the end.

Clumphs only appear in Mario & Luigi: Superstar Saga, and even then they are not found outside of battle.