James Cawley
James T. Kirk (11 eps)
Jeffery Quinn
Mr. Spock (11 eps)
John M. Kelley
Dr. McCoy (11 eps)
Denise Crosby
Dr. Jenna Yar (2 eps)
Walter Koenig
Pavel Chekov (1 eps)
George Takei
Hikaru Sulu (1 eps)