William  Shatner became a cultural icon for his portrayal of James T. Kirk, captain of  
the Star Ship Enterprise, in the Sci-Fi television series Star Trek from 1966 to 1969,
Star Trek: The Animated Series from 1973 to 1974, and in seven of the subsequent
star Trek feature films from 1979 to 1994. Shatner also played the veteran police sergeant in T.J. Hooker from 1982 to 1986. He has since worked as a musician,
author, producer, director, and celebrity pitchman. He has won two Emmy Awards
and a Golden Globe Award.

William Shatner in The Twilight Zone episode “Nightmare at 20,000 Feet”(1963)

James Montgomery "Jimmy" Doohan was an Irish-Canadian character and voice
actor best known for his role as Chief Engineer Montgomery “Scotty” Scott in
the TV and film series Star Trek. Following his success with Star Trek, he
supplemented his income and showed continued support for his fans by
making numerous public appearances. On July 20, 2005, Doohan died
at his home in Redmond, Washington. He was 85. 

LeVar Burton, is a German-born actor, director, producer and author. He is 
well-known for portraying Kunta Kinte in the 1977 award-winning ABC-TV
miniseries Roots, based on the novel by Alex Haley. He is also known for 
his portrayal of Geordi LaForge on the syndicated science fiction series
Star Trek: The Next Generation.

LeVar Burton in Roots

LeVar in Star Trek: The Next Generation

Actor Miguel José Ferrer is often cast in roles as a villain. Ferrer was
born the oldest of five children of Academy Award-winner Jose’Ferrer 
and singer Rosemary Clooney. Ferrer began his career in the early
1980s making guest appearances on episodic television. He  had a
small part in Star Trek lll: The Search For Spock (1984) as the helm
officer Excelsior. A major role for the actor came in the 1987 action
movie Robocop.

                           Miguel Ferrer as helm officer in Star Trek lll.

                            Ferrer, far right, in a scene from Robocop