Louis Jourdan as Dr. Anton Arcane

Heather Locklear as Abby Arcane

Sarah Douglas as Dr. Lana Zurrell

Dick Durock as Swamp Thing

Joey Sagal as Gunn

Ace Mask as Dr. Rochelle

Monique Gabrielle as Miss Poinsettia

RonReaco Lee as Omar

Daniel Emery Taylor as Darryl Hallenbeck

Ralph Pace as Sheriff Beaumont

Alex Van as Gurdell

Christopher Doyle as Leechman

Rex Pierson as Dr. Rochelle Mutation

Tony Sears as Harry Dugan

Bill Eudaly as Withered Chuck

Anthony Cecere as Conkilin

Timothy Birch as Clyde

J. Don Ferguson as Bob

Jim Grimshaw as Morty

Albert B. Cooper IV as Taxi Driver