Mickey is a member of the Sindacco Family and runs Caligula's Casino in the city of Las Venturas. Johnny Sindacco, a leading representative of the Sindacco family, negotiates a deal with Leone Family don Salvatore Leone to fund the casino. Salvatore demands that Mickey be killed and that a third party, Ken "Rosie" Rosenberg, be put in his place. Mickey is buried in a hole near Area 69 and Verdant Meadows.
- During gameplay in sandbox mode, the player can often see that there are six bodies in the mass grave. Hence, logically speaking, one of them has to be Mickey's.