ADMIRAL MAXWELL FORREST
Vaughn Armstrong has played more characters in Star Trek series than any other actor.
His appearances range from the Klingon Korris on ST:TNG to the Romulan Telek and a Hirogen on ST:Voyager, to his most recent (and first human) role as Admiral Maxwell Forrest on Enterprise.
Vaughn also appeared as the Klingon Korath at Star Trek: The Experience in Las Vegas.
Profile courtesy of StarTrek.com