Butch was a Human who lived on Earth during the late 20th century. He was a member of an American anti-government militia group, who in 1996, was based in a house thirty kilometers northeast of Phoenix, Arizona.
After Chakotay and B'Elanna Torres's Class 2 shuttle crashed following a failed attempt to capture Henry Starling, Butch and his friend Porter, who was also a member of the group, captured them. They believed that the Starfleet officers were actually United States Government agents sent to spy on the militia.
Chakotay and Torres were rescued by Tuvok and The Doctor. (VOY: "Future's End, Part II")
Butch was played by actor Brent Hinkley.