In the fictional world of The Simpsons, the leader of the infamous Springfield Mafia is Fat Tony. He is a hostile, powerful, and feared crime boss who runs numerous illegal activities, including gambling, money laundering, and extortion. Despite his villainous status, he is often depicted as having a soft spot, especially for his family and friends. He also has a close relationship with Mayor Quimby, who he bribes and controls. Fat Tony is voiced by actor Joe Mantegna.