Thrilla Gorilla, also known as Thrilla Gor., is a gorilla enemy that appears in the Balloon Fight! segment of the level Pro Wrabobo.
Thrilla Gorilla is a gorilla surfer that originally appeared in the NES game, T&C Surf Designs.
In The Game
Only one of them is seen in-game, as Thrilla Gorilla is seen surfing in water, until his head can be knocked off by Abobo, and Abobo can get the "Surf's Up" medal afterwards. His body will remain intact without his head.