Gumsi
Gumsi is a character from Rayman 3: Hoodlum Havoc. Despite the fact that he is noticably much smaller than most other Knaaren, he is the Knaaren king. He does not really serve as an antagonist to Rayman, apart from having him challenge his most powerful Knaaren warrior, Reflux. When Rayman defeats him, Gumsi gains respect for Rayman, and bestows him the power to convert Black Lums back into Red Lums with his Grimace.