Harvey Dent, also known as Two-Face, is a fictional supervillain appearing in comic books published by DC Comics, commonly as an adversary of the superhero Batman. The character was created by Bob Kane and Bill Finger and first appeared in Detective Comics #66 (August 1942).[3] As one of Batman's most enduring enemies, Two-Face belongs to the collective of adversaries that make up Batman's rogues gallery. Once a bright and upstanding District Attorney of Gotham City, Harvey Dent is hideously scarred on the left side of his face after mob boss Sal Maroni throws acidic chemicals at him during a court trial. He subsequently goes insane and adopts the "Two-Face" persona, becoming a criminal obsessed with the number two, the concept of duality and the conflict between good and evil. In later years, writers have portrayed Two-Face's obsession with chance and fate as the result of schizophrenia, bipolar disorder, and dissociative identity disorder. He obsessively makes all important decisions by flipping his former lucky charm, a two-headed coin which was also damaged on one side by the acid. The modern version is established as having once been a personal friend and ally of James Gordon and Batman, especially a very close friend, in most cases the best friend of his alter-ego, Bruce Wayne.[4] In 2009, Two-Face was ranked #12 on IGN's list of the Top 100 Comic Book Villains of All Time.[5] The character has been featured in various media adaptations, such as feature films, television series and video games. Two-Face has been voiced by Richard Moll in the DC animated universe, Troy Baker in the Batman: Arkham series, Billy Dee Williams in The Lego Batman Movie, and William Shatner in Batman vs. Two-Face. His live-action portrayals include Billy Dee Williams in Batman (as pre-disfigurement Harvey Dent only), Tommy Lee Jones in Batman Forever, Aaron Eckhart in The Dark Knight, and Nicholas D'Agosto in the television series Gotham.