Mark "The Animal" Mendoza (born Mark Glickman, July 13, 1955) is an American rock bassist and a member of the American heavy metal band, Twisted Sister. He joined the band on October 31, 1978, after he left The Dictators. He also briefly played in Blackfoot in the early 1990s. He now plays bass for the band Adrenaline Mob which formed in early 2011.Mendoza played the bass guitar on all of Twisted Sister's major label releases.