(written from a Production point of view)
Mario Marcelino is an actor who portrayed the Grissom's communications officer in Star Trek III: The Search for Spock. He has starred in films and on television, he starred in such films as Losin' It (1983, with Henry Darrow), and Free Ride (1986).
Marcelino appeared on the TV series Falcon Crest as Mario Nunouz from 1981-1982, and on the short-lived TV series Feel the Heat as Angel Moreno. He has made some guest appearances on TV shows such as Airwolf, Knight Rider, Hunter, Zorro, and Luis.