Marty Feldman

as Brother Ambrose

Peter Boyle

as Dr. Sebastian Melmoth

Louise Lasser

as Mary

Richard Pryor

as G.O.D.

Andy Kaufman

as Armageddon T. Thunderbird

Wilfrid Hyde-White

as Abbot Thelonious

Severn Darden

as Priest

Larri Thomas

Chuck Hicks

as Paddywagon Driver

Norman Bartold

John J. Koshel

as Hawk

Peter Koshel

as Dove

Eddie Parks