(written from a Production point of view)
Granville Van Dusen (born 16 March 1944; age 73) is an actor who has appeared twice on Star Trek: Enterprise. He first played the Klingon Magistrate in the second season episode "Judgment" and then went on to play an Andorian general in the third season episode "Proving Ground". Van Dusen took over the latter part from actor Ted Sutton who filmed his scenes but was unable to do the re-shoots.
Primarily a television actor, he has had recurring roles on the series Soap, Hill Street Blues, and Judging Amy. In 1978, he and TNG guest star Nehemiah Persoff were regular cast members of the short-lived TV series High Hopes, and in 1987, he and Teri Hatcher starred in another short-lived sitcom, Karen's Song. However, Van Dusen is probably most recognized for his three-year stint as Keith Dennison on the soap opera The Young and the Restless, from 1997 through 1999 and again from 2000 through 2001.
He has also appeared in a number of made-for-TV movies, including 1975's Someone I Touched, with DS9 guest actors Andrew Robinson and Kenneth Mars, and The Night That Panicked America, with DS9 guest actor Cliff DeYoung; 1976's Dynasty, with DS9 guest star Harris Yulin, DS9/VOY guest star Gerrit Graham, and TOS guest star Ian Wolfe; 1978's Dr. Scorpion, with Richard Herd, Joseph Ruskin, and William Lucking; 1979's Transplant, with Bibi Besch and Ronny Cox, and High Midnight, with Marc Alaimo; 1981's Madame X, with Len Cariou, Robert Hooks, Tony Plana, and Ray Wise; and 1985's A Death in California, with Fritz Weaver, William Lucking, and George D. Wallace.