He was a makeup artist on Star Trek: The Next Generation from 1989 through 1993 and shared an Emmy Award nomination for his work on the episode "Identity Crisis" . He then worked as special makeup effects artist and special alien makeup creator on Star Trek VI: The Undiscovered Country, earning a Best Makeup Oscar nomination from the Academy Awards (shared with Michael M. Mills and Richard Snell) and a Best Make-Up Saturn Award nomination from the Academy of Science Fiction, Fantasy & Horror Films (shared with Mills). In 1999 , he provided alien prosthetic applications for Star Trek: Voyager.