(written from a Production point of view)
Johnny Mandell (24 January 1942 – 14 October 1994; age 52), given name Mandell Steward, is an actor who made an uncredited appearance as one of Sulu's guards in the Star Trek: The Original Series second season episode "Mirror, Mirror".
He had three sons: Randell, Stephan, and Mark.
Aside from his appearance in Star Trek, he had one other credited role in 1969 on the The Bill Cosby Show with Nehemiah Persoff. He also had other uncredited roles on I Spy, I Dream Of Jeannie, and Mannix.