Fit-Fat Tony

Fit Tony/Fat Tony II is Fat Tony's identical cousin from San Diego. The only physical difference between him and Fat Tony is that he was in excellent physical condition.

History
Fat Tony dies of a heart attack and is subsequently replaced by Fit Tony, who takes control of the Springfield Mafia. The stress of the job, coupled with threats on his life, cause him to develop an eating disorder, he gains weight, and is rechristened Fit-Fat Tony. When he gets fat, he becomes identical to Fat Tony, and people begin calling him that. Thus, it is as if Fat Tony never died, and all appearances of Fat Tony are actually of Fit Tony, similar to the situation of Snowball II and Snowball V or Armin Tamzarian and real Seymour Skinner.

While his cousin was a widower, Fit Tony -- who is married -- takes on Selma Bouvier as his formal goomar (temporarily).