Major Tom Neville was the secondary antagonist turned anti-hero of the first season, and an anti-hero of the second season of Revolution. He gains the role of the main antagonist of Revolution: Endgame as a grinning man the nano created. Neville is a Major in the Monroe Militia who turned Danny Matheson to Sebastian "Bass" Monroe later Neville defected to the Georgia Federation and is fighting alongside Miles Matheson in the war against the Monroe Militia, in season 2, Neville and Jason become soldiers of the Patriots.

Despite his harsh tendencies Neville does what he can to keep his son Jason Neville as well as his wife Julia alive after the blackout often acting as a father figure to Jason.