as Jerry March
as Dr. Rufus Schmidt (uncredited)
as Monsieur de la Tremouille
as Maestro Borov
as The Future-being Judge
as Dr. Granchard
as Steadman
as Jordon
as Antonio
as Dantino
as Malchiel
as Carl Steiner
as Dr. Hugo Granchard
as Conductor
as Vince
as Dr. Frazer
as Defense Attorney Gage
as Older Lawyer
as Steve Radom
as Wolfgang Stromm
as Dr. Paul Hogathy
as Alien Leader (voice) (uncredited)
as Canto of Quasti (voice)
as Judge Iko (voice)
as Prof. Ainsley
