Federico "Fat Derek" Pappalardo, or simply referred to as Derek, is a hidden antagonist in the 2010 video game Mafia II, appearing as the head of the local chapter of the Longshoreman's Union and a capo in the Vinci crime family. He is introduced to the player in the third chapter "Enemy of the State" in which the protagonist Vito Scaletta approaches him for a job, as Vito's now-dead father previously worked for Derek. The character reappears later in the story in the second last mission of the game in which it is revealed he was responsible for the death of Vito's father.