Shrek

Shrek appeared in Big Chungus 3 and fought along side Goku and Xander Cage. They took control of the country when Big Chungus left for 10 years. Homer Simpson came and then tried to stop them, and he succeded.

Shrek returned in Big Chungus 13: Project Consume as the main villain. He wanted his revenge for the death of Goku. He summons an army with a trans-dimensional summoning machine.

Shrek returned in Super Big Chungus 64 DS but somehow he is a protagonist instead of being an antagonist. He is an unlockable character and can be unlocked after Dialga kills Ridley. His special move is to call out Donkey so he can ride on him running over enemies that are in his path