Sal Moroni

Salvatore Vincent "Sal" Moroni was an underworld kingpin and crime boss operating in Gotham City.

Biography
"Boss" Moroni was a mob boss who was put on trial for an unknown crime, during which, he threw acid at Harvey Dent, Gotham's District Attorney. Batman was unable to prevent that, and the acid scarred the left side of Dent's face, which created his second personality, "Two-Face". His current status was unknown, he was presumed killed by Harvey Dent became Two Face.