within the comics, as the relationship she has with the Joker is often explicit in its representation of abuse, manipulation, and Harley's struggle to gain the Joker's love.
It's also implied that the Joker may have been abusive to her (which may have been seen in the original comic as he was about to go into an angry tirade against his wife for saying "oh" in a flat tone over his failed attempt at the comedy club, only to then apologize in horror over his lashing out at her, especially ...
The Joker becomes both verbally and physically abusive. Rather than blame the Joker for this abuse, Harley convinces herself that Batman is to blame because Batman is constantly getting in the way of her being with her “Puddin.”
The ending of Batman: Three Jokers establishes that the Joker's wife did not actually die—rather, she fled to Alaska with the help of Gotham police and Batman because she feared her husband would be an abusive father; the police then told the Joker a story about her dying to protect her.
Like her previous incarnations, Harleen Quinzel was still the Joker's psychologist, but before she becomes Harley, the Joker pushes her into a vat of chemicals, bleaching her skin white and driving her insane.
Joker was abusive and a terrible boyfriend to Harley. Joker's abuse led Harley to repress her emotions about him. What he did to her eventually came back to the surface, prompting her to retaliate. Harley Quinn deserved better, and Joker didn't deserve her at all.
While Harley thought of the two of them as partners, the Joker saw Harley only as a plaything that could use however he wished, so, after years of abuse, she left him, never to return to his side again.
The comics series The Joker: The Man Who Stopped Laughing features Batman's nemesis get pregnant after a curse is placed on him, Daily Mail reported. Eventually, the Joker "vomits a sort of brown goo" that transforms first into a baby boy and then into a mini version of himself.
Superman returned to the prison where the Joker was being interrogated by Batman. Superman then shoved his entire forearm through the laughing Joker's torso and ripped out his heart, killing him.
The psychopathology Arthur exhibits is unclear, preventing diagnosis of psychotic disorder or schizophrenia; the unusual combination of symptoms suggests a complex mix of features of certain personality traits, namely psychopathy and narcissism (he meets DSM-5 criteria for narcissistic personality disorder).
So what makes the big bad villains scared of him? Well, it's down to his insanity and unpredictability, you never know what the Joker has up his sleeves. Quite frankly, even he doesn't at times. He's an absolute wild card without a Modus Operandi.
Having found legal documents from Arkham which confirm his suspicions, Arthur kills her while in custody of the medical hospital by smothering her with a pillow in revenge for all years of lies and the abuse during his childhood.
History. According to the Joker, his father was "a drinker and a fiend". Joker claimed that his father gave him his cheek scars due to his being terrified when his father brutally stabbed his mother sadistically with a kitchen knife when she attempted to use to defend herself.
In the documentary I Am Heath Ledger (via Digital Spy) it's revealed that, in order to keep the prosthetics in their place as they got loose when he spoke, Ledger had to lick his makeup to keep it in place, and it ended up becoming part of the Joker's manic personality, as well as his most memorable mannerism.
The shot actually comes from Harley Quinn who, in Batman #99, showed that she was willing to put the Joker down -- permanently. Her shot doesn't kill Joker, but it does take out his right eye, and it's no accident.
Arthur was brought up by a foster mother and did not have a father figure. The foster mother herself describes him growing up as a fun and kind boy, but later he was abused and beaten by his adoptive parents and even had a severe head injury.
In Injustice: Gods Among Us, Harley Quinn reveals she gave birth to Joker's daughter, but gave her up for adoption rather than subject her to a life with Joker as a father. Similarly, Harley becomes a mother to twin children in the Batman: White Knight universe, though with happier results.
The Joker has had children show up before, but in most cases, they turned out not to be the biological offspring of the villain. Joker's Daughter ended up being the child of Harvey Dent, while his son Anarky was intended to be revealed as someone else's kid before his series was canceled.
According to the Arkham State Hospital's files, Arthur was adopted by Penny but her boyfriend severely abused Arthur, leaving him with traumas and physiological damage until he developed a neurological condition that caused him to develop uncontrollable laughter in unsuitable moments.
It is from this Bruce deduces that the Joker does not care who Batman is; he only cares for Batman, and that to acknowledge Batman's true identity would spoil the Joker's "fun".
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.
