Marion Anthony Paul D'Amico, originally known as Fit Tony, then later Fit-Fat Tony, and now known as the new and improved Fat Tony, is Fat Tony's cousin. He was originally from San Diego, but later moved to Springfield to take control of the Springfield Mafia after his cousin's death. Physically speaking, he is identical to Fat Tony with the only difference being that he is initially in much better physical shape.
When Fat Tony died of a heart attack, Fit Tony moved to Springfield and takes his cousin's place running the Springfield Mafia. The pressure of the position gets to him and he begins to overeat which causes him to put on weight. As a result of this weight gain, he became 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 the real Seymour Skinner.
In Penny-Wiseguys, Fit-Fat Tony gets jury duty. So he names his accountant, Dan Gillick, temporary don. Gillick proposes to Fit-Fat Tony to save money by getting rid of redundant mobsters, but he's mortified when Fit-Fat Tony tells him to rub them out. He finds that 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.
In What to Expect When Bart's Expecting, Fit-Fat Tony kidnaps Homer and Bart Simpson in order for Bart to use his baby creating voodoo magic, but it turns out that Fit-Fat Tony wants it to work on horses, not humans. Fit-Fat Tony also not only wanted his horses to breed, but also wanted a male horse.
In 22 for 30, Fit-Fat Tony was even revealed by Lisa Simpson that he used to be part of a basketball team called the Hostesses as a child. Even Louie revealed that Fit-Fat Tony cried to When She Loved Me from Toy Story 2 once.
He also revealed to Chief Wiggum, in The Fat Blue Line, that whenever he is alone in a room at the Legitimate Businessmen's Social Club, he secretly would sing by himself for entertainment fun (Which also proved that he didn't pickpocket the wallets that he was framed for, and the reason being on why he refuses to pickpocket is because his father, and the original Fat Tony's uncle, Fatso Antonio, died from his heart being pickpocketed when it was gonna be used for his upcoming heart surgery years ago).
Like his cousin, Fit-Fat Tony, too, keeps having his ring he wears on his right hand's pinky finger, as well as his jacket pocket containing his handkerchief, disappearing and reappearing in different shots.
|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|
|Joe Quimby | Snake Jailbird | Krusty the Clown | Luigi Risotto | Marge Simpson|