Happy Birthday: Two-Face
Harvey Dent was young, charismatic, idealistic, and driven—at 26 he was the youngest District Attorney Gotham City had ever had, and the press dubbed him “Apollo” for his good lucks and his meteoric rise.
Dent’s idealism was also flexible enough that he recognized the good Batman did, even if the Dark Night Detective didn’t always follow the rules. The two wound up becoming staunch allies, even friends, and their passions for justice actually complemented each other.
Until, one June 12th, Dent reached the high point of his career—prosecuting Sal “Boss” Maroni for murder. Unbeknownst to Dent, his own assistant Vernon Field worked for Maroni, and when Maroni was forced to take the stand Field handed him an antacid bottle filled with sulfuric acid. Dent got up to cross-examine Maroni, displaying his key evidence—Maroni’s good luck charm, a two-headed coin he always carried, which he had carelessly left at the scene of the crime.
Maroni then hurled the acid—Batman tried to intervene but only managed to deflect the attack so Dent caught the acid on the left side of his face and on his left hand instead of across his entire face. The attack did not kill him, as Maroni had planned, but did leave Dent permanently disfigured—in mind as well as body.
The horribly scarred D.A. snapped and turned to a life of crime and violence himself, scarring one side of Maroni’s coin and flipping it to determine his actions whenever presented with a choice between good and evil. And thus Two-Face, one of Batmnan’s most dangerous villains, was born.