Robert Mammone (born 1971 in Adelaide, South Australia, Australia) is an Italian-Australian actor. He is known for his role as AK in The Matrix movies, as Sid Walker in the soap opera Home and Away and as Tim Palmer in Sons and Daughters. He was also the main villain to former WWE wrestler Stone Cold Steve Austin in the WWE Films action movie The Condemned, and portrayed Carlos "Charlie" Blanka in Street Fighter opposite Jean-Claude Van Damme and Raul Julia. He is best known for his portrayal as convicted drug baron Tony Mokbel on the hit Australian television show Underbelly and the sequel Fat Tony & Co.