Philip Michael Thomas
Randy / Brother Rabbit (voice)
Barry White
Sampson / Brother Bear (voice)
Charles Gordone
Preacherman / Preacher Fox (voice)
Scatman Crothers
Pappy / Old Man Bone (voice)
Buddy Douglas
Referee (voice)
Al Lewis
The Godfather (voice) (uncredited)
Richard Paul
Sonny (voice) (uncredited)
Frank De Kova
Managan (voice) / Ruby (voice) (uncredited)
Ralph Bakshi
Cop With Megaphone (voice) (uncredited)
Jesse Welles
Marrigold (voice) / Miss America (voice) (uncredited)
Ben Gage
Brother Bear (voice) (uncredited)
Mihaly 'Michu' Meszaros
Boxing referee (uncredited)