DeForest Kelley
as Lt. Cmdr, Leonard H. 'Bones' McCoy, M.D.
James Doohan
as Commander Montgomery 'Scotty' Scott
George Takei
as Lt. Cmdr. Hikaru Sulu
Majel Barrett
as Lt. Cmdr. Christine Chapel, M.D.
Walter Koenig
as Lt. Cmdr. Pavel Chekov
Nichelle Nichols