Salvatore Maroni

Sal "The Boss" Maroni is a mob boss who appears in DC Comics as an enemy of Batman. In most continuity, he was the man directly responsible for Harvey Dent's transformation into Two-Face after throwing a vial of acid in his face during a trial.

Batman Forever
In a news report shows a man called "Boss Moroni" in court with Harvey Dent and throws acid at his face despite Batman's intervention. It would later cause Harvey to become Two-Face the main antagonist of the film. He is portrayed by Dennis Paladino.

Gotham Knight
Maroni is heavily featured in the animated feature Gotham Night. He is involved in a gang war with fellow crime lord Yuri "The Russian" Dimitrov.

The Dark Knight
Maroni appears in The Dark Knight as the tertiary antagonist, portrayed by Eric Roberts (who also played the Master in the Doctor Who movie). He took over as boss of Carmine Falcone's crime family following Falcone's fall from power in the previous film.

Batman Arkham City
Sal Maroni's restaurant makes a cameo in the game Arkham City. It is later mentioned that they were long time rivals of the Falcones. The Falcones then did a large scale attack on the restaurant and killed most of them. The rest of them were thrown into Arkham City.

Batman Arkham Origins
In the Batcave new paper clipping with articles and pictures about him can be found.

Gotham

 * See: Sal Maroni

Sal Maroni appears in the first season of Gotham in which he is portrayed by David Zayas. Oswald Cobblepot originally works for him, but he was in fact just a snitch for Sal's enemy Carmine Falcone and attempts to kill Cobblepot for his treachery. He is killed in the season finale when shot in the head by Fish Mooney, which means that in the Gotham universe he doesn't go onto scarring Harvey Dent.