as Jack Slater / Himself

as Claudia Baldwin

as Alex Medbourne / Dr. Giacomo Rappaccini / Gerald Pyncheon

as Richard "Reef" Holloway

as Randall

as Narrator / Blarney Kilakilarney (voice)

as Police Lt. Porter

as Lt. Cmdr. Paul Turner

as Heinrich Kley

as Izzy Einstein

as Catherine Curtis