Frank da Vinci is a television stunt performer and acting extra. He worked on the original Star Trek television series and was involved in the production of 46 episodes. He played a background character named LieutenantClifford Brent and also played a security guard in other episodes. In the episode "Catspaw", he was a stunt double for actor Leonard Nimoy. In the season three episode "The Tholian Webb", he was a stunt double for DeForest Kelley.