Characters played by Robby Benson
Pinsky
Characters played by Linda Grovenor
Amy
Characters played by Charles Durning
Arnold
Characters played by Elsa Lanchester
Sophie
Characters played by Bud Cort
Mueller
Characters played by Rita Taggart
Thelma
Characters played by Marty Zagon
Friend
Characters played by Larry Hankin
Bock
Characters played by Sam Krachmalnick
Zhukov
Characters played by Michael David Lee
Einstein
Characters played by Peter Coyote
Davis
Characters played by Charles Fleischer
Charlie
Characters played by Charles Harwood
Marvin
Characters played by Melanie Henderson
Betty
Characters played by Carel Struycken
Gregor the Giant