Marc Singer

Paul Ferguson

Tracy Scoggins

Barbara White

Mary Woronov

Dr. Glatman

Irene Miracle

Sarah Ferguson

Jonathan Farwell

Steve Malceno

Tom Poster

Outsider (as Thomas W. Poster)

Don Pugsley

Smith (as Donald Pugsley)

Joseph Hardin

Wesson

Diana James

Belle

John Lafayette

Watson

Tommy Hinkley

Lab Assistant

Keisha

Woman at Motel (as Raquel Rios)

Daryl Haney

Panhandler

Michael McDonald

Animal Rights Activist (uncredited)