When Fat Tony dies of a heart attack, Fit Tony moves to Springfield and takes his cousin's place running the Springfield Mob. The pressure of the position gets to him and he begins to over-eat which causes him to put on weight. As a result of this weight gain, he becomes known as Fit-Fat Tony and then simply Fat Tony, as he turned exactly in the same emotional and physical form of his late cousin
Fit-Fat Tony, now nicknamed Fat Tony, now looks exactly like his cousin to such an extent that it is as if the original Fat Tony never died. This physical resemblance suggests that all previous appearances of Fat Tony are in fact of Fit Fat Tony in a similar situation to Snowball II and Snowball V or Armin Tamzarian and real Seymour Skinner.
In "Penny-Wiseguys", Fit-Fat Tony gets jury duty -- so he names his accountant, Dan Gillick, temporary don. Gillick proposes to Tony to save money by getting rid of redundant mobsters -- but he's mortified when Tony tells him to rub them out. He finds he likes it way too much and asks Homer Simpson to stop him from killing mob members.
In "Bull-E", Fit-Fat Tony is in the anger-management class.
|Don Vittorio DiMaggio | Fit Fat Tony | Louie | Legs | Joey | Johnny Tightlips | Michael D'Amico | Frankie the Squealer | Jimmy the Snitch | Joey the Arsonist|
|Former Mafia Members|
|Fat Tony (deceased) | Bart Simpson | Homer Simpson | Nicky Bluepants Altosaxophony|