Paul Baxley was a veteran Hollywood stuntman who doubled for William Shatner in many Original Series fights, arranged stunts for the programme and took several small speaking roles on screen.
Paul Baxley was an experienced film stuntman before Star Trek, and from the first season he became William Shatner's most regular double, taking the falls and flying kicks in a long list of Kirk's fights. He also arranged and supervised stunts on many episodes.
He appeared on camera in his own right as well. He was the armoured Black Knight who runs McCoy through in Shore Leave, Ensign Freeman, the crewman who trades insults and then punches with the Klingons in The Trouble with Tribbles, and the leader of the village patrol in A Private Little War.
After Star Trek he continued as a stunt coordinator and second-unit director in American television for many years.