John K. Shull (born May 23, 1952 in Los Angeles, California) is an American actor known for his work in both film and television, as well as notable contributions to popular video games. Shull is recognized for appearing in "Pump Up the Volume" (1990) as PTA Parent #2, and he lent his talents to the Star Trek franchise, playing roles such as Brok'Tan, Commander Nocona, and Medicine Man in three episodes of "Star Trek: Voyager." Additionally, he was a voice actor in the acclaimed video game "Star Trek: Klingon Academy" (2000), portraying characters like Academy First Officer, Hovak Captain, and Starbase 3. His career includes performances in classic TV series such as "Highway to Heaven," where he appeared as Policeman #1. Shull's versatile acting has made him a familiar face to fans of both on-screen drama and interactive entertainment, particularly within the Star Trek universe.