演职人员
Christopher Pike
Jeffrey Hunter
Spock
伦纳德·尼莫伊
Number One
Majel Barrett
Vina
蘇珊·奧利佛
The Keeper
Meg Wyllie
Lieutenant José Tyler
Peter Duryea
Yeoman J. M. Colt
Laurel Goodwin
Transporter Chief Pitcairn
Clegg Hoyt
The Keeper (voice)
Malachi Throne
The Kaylar
Michael Dugan
First Talosian
Georgia Schmidt
First Talosian (voice)
Robert C. Johnson
Second Talosian
Serena Sande
Dr. Theodore Haskins
Jon Lormer
C.P.O. Garrison
Adam Roarke
Second Survivor
Leonard Mudie
Third Survivor
Anthony Jochim
Enterprise Geologist
Edward Madden
Orion Space Officer
Robert Phillips
Earth Trader
Joseph Mell
Anthropoid Ape / Humanoid Bird
Janos Prohaska
Bridge Crewmember (uncredited)
Carol Daniels