All Cast
Bill Cosby
Fat Albert / Bill / Mushmouth / Mudfoot Brown (voice)
Jan Crawford
Russell (voice)
Gerald Edwards
Weird Harold (voice)
Eric Suter
Rudy (voice)
Erika Scheimer
Diesel (voice)
Eric Greene
Marshall Franklin (voice)
Kim Hamilton
Marge Franklin / Nurse (voice)
Julius Harris
Mr. Tyrone (voice)