Captain Alvarez is played by Corin Nemec, Actor, Producer and Writer born in Little Rock, Arkansas. He now lives in California. His first acting parts were in the series Webster (1983) and Sidekicks (1986). He then got a part in Tucker: The Man and His Dream (1988), directed by Francis Ford Coppola, followed by lead roles in I Know My First Name Is Steven (1989) and My Son Johnny (1991), and the lead role in the TV series Parker Lewis Can't Lose (1990). Nemec is known for playing the title character on Parker Lewis Can't Lose, Jonas Quinn on Stargate SG-1, and Harold Lauder in the ABC miniseries The Stand.