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)

Danny Rees
Clown (voice)

Buddy Douglas
Referee (voice)

Jim Moore
Mime (voice)

Al Lewis
The Godfather (voice) (uncredited)

Richard Paul
Sonny (voice) (uncredited)

Frank De Kova
Managan (voice) / Ruby (voice) (uncredited)

Jesse Welles
Marrigold (voice) / Miss America (voice) (uncredited)

Ben Gage
Brother Bear (voice) (uncredited)

Mihaly 'Michu' Meszaros
Boxing referee (uncredited)