(written from a Production point of view)
Nicholas Guest (born 5 May 1951; age 70) appeared as a Starfleet cadet in Star Trek II: The Wrath of Khan. Guest is the younger brother of actor-comedian and musician Christopher Guest, whose wife Jamie Lee Curtis is the younger sister of Kelly Curtis.
Other films in which he appeared include Trading Places (1983, with Bill Cobbs and Ron Taylor), National Lampoon's Christmas Vacation (1989, with Natalia Nogulich and Jeremy Roberts), Nemesis (1993, with Marjorie Monaghan and Cary-Hiroyuki), and The Joy Luck Club (1993, with Rosalind Chao and France Nuyen).
However, he is most prolific as a voice actor in films such as Cowboy Bebop: The Movie (2001) and Racing Stripes (2005), animated television shows such as Big O, and video games such as Star Trek: Armada II and Star Trek: Bridge Commander. He also appeared in episodes of Batman: The Animated Series (with Loren Lester and Paul Williams), Batman Beyond (as the brother of Olivia d'Abo's character), The Zeta Project (with Diedrich Bader, Richard Libertini, and Wil Wheaton), Justice League (with Clancy Brown, Richard McGonagle, Jason Marsden and Mark Rolston) and Justice League Unlimited (with Malcolm McDowell and Douglas Dunning). Guest guest-starred in the USA High episode "Excess's Ex" (1998, with Stacie Foster and Lilyan Chauvin)