Lazaro Alonso (born March 25, 1974) is an American actor. He is known for playing Tsu'tey in James Cameron's science fiction film Avatar and Fenix Calderon in the film Fast & Furious. Alonso has had roles in other films such as Jarhead, This Christmas, Miracle at St. Anna and Detroit. As of 2019, Alonso is part of the main cast of Amazon Prime Video original series The Boys (based on the comic book series of the same name) playing the character known as Marvin T. "MM (Mother's Milk)" Milk.