Star Trek

William Shatner

James T. Kirk

Leonard Nimoy

Spock

DeForest Kelley

Dr. McCoy

James Doohan

Scott

George Takei

Sulu

Nichelle Nichols

Uhura

Walter Koenig

Pavel Chekov

Frank da Vinci

Soldier at Party

Eddie Paskey

Lieutenant Ryan (uncredited)

Ron Veto

Eminiar Guard

John Winston

Lieutenant Kyle

Majel Barrett

Christine Chapel

David L. Ross

Johnson

Grace Lee Whitney

Janice Rand

Barbara Babcock

Philana

Bobby Bass

Guard (uncredited)

Walker Edmiston

Warning call from the S.S. Deidre (voice)

Bill Blackburn

Lieutenant Hadley (uncredited)

Tom Anfinsen

Civilian Engineer (uncredited)

Carey Foster

Enterprise Crew Member (uncredited)

Vic Perrin

Tharn

Bart La Rue

Trelane's Father (voice) (uncredited)

Elizabeth Rogers

Lt. Palmer

Michael Barrier

DeSalle

Jim Goodwin

Farrell

Richard Compton

Technical Officer

Sean Kenney

Crippled Pike

Janos Prohaska

The Mugato

Ted Cassidy

Balok's puppet (voice)

Bob Johnson

Starbase 6 commander (voice)

Barbara Baldavin

Communications Officer

Bruce Mars

Crewman

Roger C. Carmel

Harcourt Fenton Mudd

Bruce Hyde

Lt. Kevin Thomas Riley

Michael Zaslow

Jordan

Mark Lenard

Romulan Commander

Craig Huxley

Peter Kirk

Lawrence Montaigne

Decius

Booker Bradshaw

Dr. M'Benga

Diana Muldaur

Dr. Miranda Jones