Vince Deadrick was a stuntman who appeared throughout The Original Series as a double for the leads and in small roles such as the security guard Mathews.
Vince Deadrick was among the busiest stunt performers on The Original Series, working on the programme across all three seasons and doubling at various times for DeForest Kelley, Leonard Nimoy and guest actors.
His most visible role came early, as Mathews, one of the two security guards who beam down to Exo III in What Are Little Girls Made Of? and who is pushed into a bottomless pit by the android Ruk. He was also a Romulan crewman aboard the Bird-of-Prey in Balance of Terror and one of the natives of Gamma Trianguli VI in The Apple.
His son, Vince Deadrick Jr., later served as stunt coordinator on Star Trek: Enterprise, giving the family a connection to the franchise spanning four decades.