John D Trooper (as Mike Sullivan)
Commodore Vandross
Captain Donnor
Captain Bremner
Anna Robson
Duke Dempsey (as Brett Paul)
Jane Bronski
Lucindia Jericho
Lou Capra
'Doc' Tyler
Wes Gibson
Hans Becker
Legs Corville
Bull Denver
Crewman
Will Charmer (as Marcus Heath)
Venus
Quarry Child
Robot Barman
Computer (voice)
Security Man
Lady on Beach
Child