Gary Combs was a stuntman on The Original Series who doubled for William Shatner in several episodes and shared the role of the Gorn captain in Arena.
Gary Combs was one of the stunt performers engaged during the first two seasons of The Original Series, most often as a double for William Shatner in fight scenes.
His most familiar work, though his face is never seen, is in Arena, where he was one of the men inside the heavy rubber Gorn costume during the duel with Kirk; the part was divided between Combs and Bobby Clark, with the creature's voice supplied by Ted Cassidy. He also stood in for Shatner during the brawl with Khan in the engine room in Space Seed.
Combs went on to a long career as a stuntman and stunt coordinator in film and television.