Bull looks just like Darwin exept he has a 5 0'clock shadow and has a ton of muscle. Bull's hight is also 6 foot 2 and is 32 years old.
Gumball - He's more like the big brother to Gumball. Like he'll give him advice to get Penny or help Gumball stop a monster that's threatening all of Elmore. But Bull will also prank Gumball or make fun of him when he fails a lot at something. But even though he'll prank Gumball, ther'e still great friends.
Darwin - He and Darwin will hang out a lot and like Gumball he'll give advice to Darwin to help him.
Skeleton King - The Skeleton King and him now hate each other from the very moment that Bull left. And now the Skeleton King wants to kill Bull.