THX

Robert Duvall

Acting

SEN

Donald Pleasence

Acting

SRT

Don Pedro Colley

Acting

LUH

Maggie McOmie

Acting

PTO

Ian Wolfe

Acting

TWA

Marshall Efron

Acting

NCH

Sid Haig

Acting

DWY

John Pearce

Acting

IMM

Irene Cagen

Acting

CAM

Gary Alan Marsh

Acting

OUE

John Seaton

Crew

JOT

Eugene I. Stillman

Acting

TRG

Jack Walsh

Acting

Shell Dweller

Mark Lawhead

Acting

Chrome Robot

Robert Feero

Acting

Chrome Robot

Johnny Weissmuller Jr.

Acting

ELC

Claudette Bessing

Acting

Control Officer

Susan Stroh

Acting

OMM (voice)

James Wheaton

Acting

Mark 8 Student

Henry Jacobs

Acting

Mark 8 Instructor

Bill Love

Acting

Monk

Doc Scortt

Acting

Man in Yellow

Gary Austin

Acting

Child #1

Scott L. Menges

Acting

Child #2

Toby L. Stearns

Acting

Trial Prosecutor

Paul K. Haje

Acting

Trial Proctor

Ralph Chesse

Acting

Trial Defender

Dion M. Chesse

Acting

Trial Pontifex

Bruce Chesse

Acting

Hologram Dancer

Mello Alexandria

Crew

Hologram Dancer

Brandyn Barbara Artis

Acting

Hologram Newscaster

Morris D. Erby

Acting

Hologram Comic

Willie C. Barnes

Acting

Hologram Comic

Richard Quinnell

Acting

Hologram Listener

Jean M. Durand

Acting

Announcer (voice)

Scott Beach

Acting

Announcer (voice)

Neva Beach

Acting

Announcer (voice)

Terence McGovern

Acting

Announcer (voice)

Julie Payne

Acting

Announcer (voice)

James Cranna

Acting

Announcer (voice)

Ruth Silveira

Acting

Announcer (voice)

Bruce Mackey

Acting

Announcer (voice)

David Ogden Stiers

Acting

Announcer (voice)

Bart Patton

Acting