Paskey first appeared on "Star Trek" as a "crewman" on the second pilot episode "Where No Man Has Gone Before," and was first identified by name in "Mudd's Women" in an early scene where Doctor McCoy refers to him as Connors. In subsequent episodes, he was cast regularly as a crewman, but also appeared as a security officer, a helmsman, an engineer station officer, even an alien, all to create a sense of continuity on "Star Trek" during the series' run. Paskey had scripted lines in four episodes and was credited in two. His character, Mr. Leslie, appeared in more episodes than principal characters Sulu or Chekov. William Shatner gave the character the name Leslie after his eldest daughter. To pay homage to the character of Leslie, a fan based website created an 8" action figure in Paskey's likeness.