Two-Face (Harvey Dent) is a 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 first appeared in Detective Comics #66 (August 1942).
It's directly stated in TDK, somewhere around the hospital part. Because he was very "two faced" back in internal affairs; he would constantly be checking people out and turning them in.
1) When Two-Face first appeared in Detective Comics #66, his real name was Harvey “Apollo” Kent. He kept the Kent surname for his next few appearances, until it was changed to Harvey Dent in 1948's Batman #50.
Dent's spiral into Gotham's madness came swiftly after a criminal threw acid into his face, leaving half of it horribly scarred. Seeking refuge in the underbelly of Gotham, the name Harvey Dent and all the good it stood for was lost…and Two-Face rose from the darkness.
It is then revealed that the Joker's real name is "Jack Oswald White." Martha then shares that she visited the Flashpoint universe's version of Jack Oswald White, discovering him to be a struggling family man supporting his wife and a child as a janitor at Wayne Casino.
Two-Face Origins - Batman's Most Tragic And Terrifying Villain Who Gets Underestimated All The Time
Who is Joker's girlfriend?
DC Universe. Harleen Quinzel was a psychologist at Arkham Asylum, and after meeting the Joker, she became his frequent accomplice, took on the name Harley Quinn, and got into an abusive codependent relationship with him.
Finally, as far as television is concerned, in Season 5 of Gotham, Bane was introduced with the real name of Eduardo Dorrance, and with a background that combines his history in the comics with his role in The Dark Knight Rises.
Two-Face is not consistently evil; every time he contemplates a crime, he flips his two-headed coin. Only if the coin came up scratched-side did Two-Face go ahead and commit the crime, never questioning the result of the toss.
Gilda Dent is a fictional character who has appeared in Batman comic books since Detective Comics #66 (August 1942), alongside her fiancée Harvey Dent (soon to be the criminal mastermind Two-Face) . She has since been a recurring character throughout Batman stories with Two-Face.
After Bane helped Talia al Ghul escape from the Pit, he was attacked by prisoners. However, a doctor failed to treat him and left him in chronic pain. Out of gratitude for saving his daughter, Ra's al Ghul liberated Bane from the Pit and provided him with a crude prototype mask to numb his pain.
Two-Face suffers from schizophrenia, bipolar disorder, and dissociative identity disorder. It is said that this is why he has an obsession with chance and destiny.
Mob boss Carmine Falcone bribes corrupt Assistant District Attorney Vernon Fields to provide his lieutenant Sal Maroni, whom Dent is trying for murder, with sulfuric acid; Maroni throws the acid in Dent's face during a cross-examination, horribly scarring the left side of Dent's face.
Harvey became Two-Face due to a combination of Maroni's scarring, untreated mental illness, marital stress and his own personal choices. But one has to wonder if Batman and Gordon ever lay awake at night haunted by the role they played in Harvey's downfall.
Gilda seems to think that Harvey took over on New Years Eve and that Alberto Falcone's murder was just one isolated case. The last few pages of the last issue of the limited series are pretty self-explanatory: there were three separate “Holiday Killers”. Gilda Dent was the original “Holiday Killer".
Harvey Dent's origin and transformation of Two-Face on the Earth-One universe, mirrors that of his Earth-Two counterpart. After his disfigurement, he started a crime spree as Two-Face until he was eventually stopped by Batman, who talked reason into him and convinced Dent to have his face restored with plastic surgery.
After Batman kills him to save Commissioner Gordon's (Gary Oldman) family in The Dark Knight's ending, the former two characters famously discuss why the good Harvey Dent did as DA needs to win out in the public eye, with Gotham never knowing that he was responsible for the five deaths he racked up.
Although Dent apparently fell to his death during a standoff with Batman and Jim Gordon in a burnt-out warehouse, some fans have suggested that Dent might not be dead since there was no blood evident (it was rated PG-13, mind you, and there was no blood even when Batman beat the snot out of Joker in the interrogation ...
Due to The Dark Knight's mishandling of the character's origins, his death at the end of the film was essentially a mercy killing - he'd been given a (rushed) narrative arc, and there was very little left to do with the character.
As a boy, Harvey Dent had an unhappy childhood. He was beaten regularly by his father, who made the choice by flipping a lucky coin. The coin became a reoccurring theme in Dent's life, which he used to make crucial decisions. The abuse he suffered made him unable to make any choices of his own.
But one stands apart—the massive freak of nature known as Killer Croc. Born as Waylon Jones, Croc has a rare genetic condition which gives him a crocodilian appearance.
While searching for the Swiss man in Rome, Bane encounters Talia al Ghul and the League of Assassins and eventually impresses Ra's al Ghul so much that he chooses Bane to marry Talia and become his heir.
Bane's true objective was to kill Batman to achieve his own sense of peace, and he believed that the Dark Knight was a dark figment of his imagination as he rotted away in his Santa Prisca prison cell, and then to conquer Gotham City and forge his own criminal empire.
