Where No Man Has Gone Before

Main Cast

 * William Shatner as James T. Kirk
 * Leonard Nimoy as Spock
 * James Doohan as Scott
 * George Takei as Sulu

Guest Stars

 * Gary Lockwood as Gary Mitchell
 * Sally Kellerman as Elizabeth Dehner
 * Paul Carr as Lee Kelso
 * Paul Fix as Mark Piper
 * Andrea Dromm as Yeoman Smith
 * Lloyd Haynes as Alden
 * Eddie Paskey as Leslie

Non-Canon Links

 * Several novels have been published that directly follow this episode. In 1999 the My Brother's Keeper trilogy (by Michael Jan Friedman), was released.  The books told the story of Kirk and Mitchell's friendship from the Academy to when they both served upon the Enterprise in the form of flashbacks.
 * In 2005, the first novel of the Star Trek: Vanguard, Harbinger by David Mack, was published. The novel featured the Enterprise stopping off at Vanguard following its mission to the galactic barrier.
 * In 1998, Star TreX, a joint TOS/X-Men comic, was released by Marvel Comics, which featured the Enterprise crew and the X-Men returning to Delta Vega to face a resurrected Gary Mitchell and his allies from the X-Men's dimension.