He portrayed Captain Christopher Pike in the framing story filmed for the two-part Star Trek episode, "The Menagerie" and was the first of the two actors to be seen in the show, as the scenes from the pilot showing the healthy Pike were used later in the court-martial sequence. Apparently the character was rendered mute and crippled to conceal the fact that Kenney's voice was not the same as Jeffrey Hunter's and so to hide the fact he was not the same actor.
