Most famous for his roles in science fiction series, this California-born actor appeared in episodes of Star Trek: The Next Generation, Star Trek: Voyager, and The X-Files. Also a stage actor, he performed with Al Pacino in the 1973 Broadway production of Richard III.
He studied theater at both California State University-Fullerton and the Juilliard School.
He appeared in several episodes of the 1980s crime series Matt Houston.
He grew up in the Southern California communities of Azusa and Glendora.
His role in the early 1980s movie Star Trek II: The Wrath of Khan resulted in a lifelong friendship with fellow Star Trek actor Ricardo Montalban.