|Played by:||Richard Sarstedt|
|Crewman McKenzie on Quarra|
He was sitting at the table in the mess hall together with the others crewmembers as the crewman science division officer played for John Copage, when suddenly appears Quinn y the Captain Kathryn Janeway in the mess hall. (VOY: "Death Wish")
He was working in engineering when a group of Enaran scientists came aboard Voyager and later passed Chakotay and B'Elanna Torres in a corridor. McKenzie also attended the banquet, held for the Enarans in the decorated mess hall. Shortly after the banquet he witnessed the collapse of B'Elanna Torres in engineering and later attended the final ceremony for the Enarans in the mess hall when B'Elanna accused Jor Brel and explained the crimes of the Enarans. (VOY: "Remember")
In 2377, he was brainwashed by the Quarren after they irradiated Voyager and forced the evacuation of its crew. He appears descending the power plant stairs´s when, his identity was reassigned to that of a laborer working along with most of the rest of the crew for approximately three weeks in the largest city on Quarra, when their memories were altered and they were unaware that nearly the entire Voyager crew was abducted by Dr. Kadan. (VOY: "Workforce"). McKenzie's personnel file at the plant was one of many Voyager crew files accessed by Tuvok, whose memory was still partially intact. (VOY: "Workforce, Part II")
William McKenzie, Lydia Anderson and Keith Rayve as a command division officer between other, that were in the mess hall when Neelix distributed minutes, to communicate at the Alpha Quadrant. (VOY: "Author, Author")
He celebrated First Contact Day with the rest of the crew in 2378 in the mess hall aboard the Voyager, where he had a conversation with Tuvok. Later, he stood in a row to bid farewell to Neelix, who left the ship. (VOY: "Homestead")
- McKenzie was played by regular background actor and Robert Beltran's stand-in Richard Sarstedt, who also played an ensign throughout the run of Star Trek: The Next Generation as well as several other background characters. They may be the same character.
- McKenzie was identified by name in the episodes "Unity" and "Workforce, Part II"; Sarstedt received no credit for his appearances.