Marc Singer

as Paul Ferguson

Tracy Scoggins

as Barbara White

Mary Woronov

as Dr. Glatman

Irene Miracle

as Sarah Ferguson

Jonathan Farwell

as Steve Malceno

Tom Poster

as Outsider (as Thomas W. Poster)

Don Pugsley

as Smith (as Donald Pugsley)

Joseph Hardin

as Wesson

Diana James

as Belle

John Lafayette

as Watson

Tommy Hinkley

as Lab Assistant

Keisha

as Woman at Motel (as Raquel Rios)

Daryl Haney

as Panhandler

Michael McDonald

as Animal Rights Activist (uncredited)