Robert Duvall

THX

Donald Pleasence

SEN

Don Pedro Colley

SRT

Maggie McOmie

LUH

Ian Wolfe

PTO

Marshall Efron

TWA

Sid Haig

NCH

Jack Walsh

TRG

Johnny Weissmuller Jr.

Chrome Robot

James Wheaton

OMM (voice)

Gary Austin

Man in Yellow

Ralph Chesse

Trial Proctor

Scott Beach

Announcer (voice)

Terence McGovern

Announcer (voice)

Julie Payne

Announcer (voice)

David Ogden Stiers

Announcer (voice)

Bart Patton

Announcer (voice)