Sivero first appeared as an extra in The Godfather in 1972. He also starred in the movies The Gambler, New York, New York, The Billion Dollar Hobo, Fyre, Sunnyside, Going Ape!, Fighting Back, Fear City, Ruthless People, 52 Pick-Up, The Galucci Brothers, Cop and ½, Fist of Honor, Painted Desert, Dumb Luck in Vegas, The Wedding Singer, Urban Relics, Foolish, Carlo’s Wake, Little Nicky, Turnaround, Eddie Monroe, and Hotel California. In October 2014 Sivero filed a $250 million against Fox Television Studios. The suit claims that The Simpsons character Louie was based on him and that his likeness has been infringed in violation of California’s publicity rights law.