HARLEY QUINN (EARTH-7)

Biography 

Origin

Harleen Quinzel pursued psychiatry out of a sincere wish to help people. She focused on the most disturbed patients, dedicating herself to guiding them toward sanity. However, over time, Harleen began to question whether true sanity even existed, and if it did, whether it was worth pursuing at all.

The Quinzel Method

Her doubts led her to a new philosophy: people should embrace their "best version" of themselves—even if that version was terrifying to others. This became the foundation of the Quinzel Method, a twisted therapeutic approach that encouraged patients to personify their id through symbols of fear and freakishness. The method taught them to weaponize society’s contempt and reframe it as power.

Revolutioning Gotham

Through this practice, Harleen’s influence spread among Gotham’s rogues. Villains like the Mad Hatter, Killer Moth, Magpie, Firefly, Ventriloquist, Ratcatcher, and Orca, among others, found empowerment in their inner madness, reshaping their identities through her method.

The Joker

Harleen’s ultimate test subject, however, was the Joker. For years she prepared herself for this "final project," and when the moment arrived, the Joker did exactly what she had envisioned: he broke her completely free from her old self. 

 With his chaos as a catalyst, Harleen Quinzel abandoned her former identity and embraced her new persona—Harley Quinn.

 As a gift, she was the responsible for helping him to break free from Arkham Asylum, which consequently caused the Massacre.

 Now, Harley embodies contradiction. She is a court jester of chaos, exposing the madness beneath Gotham’s facade and mocking the fragile rules of order. Always on the winning side in her own eyes, she shows society the faces it tried to ignore—those pushed to the margins—and drags them back into the spotlight.

A New Kind of Sanity

Years after the Massacre, the Joker remains confined in solitary isolation, having attempted to recreate his previous atrocity by hunting down the surviving victims of his original attack. Batman ultimately intervened before he could complete his plans, leaving the criminal under the control of Arkham Asylum’s new leadership. With Hugo Strange, a member of the Light, now overseeing the institution, the Joker was offered as part of the Legion of Good’s new plan of action. At Lex Luthor’s request, Harley seized the opportunity to develop an entirely new approach to rehabilitation, creating a form of lobotomy designed to be significantly less invasive while producing far more effective results. The Joker became her first patient, serving as both the ultimate test of her new technique and, in Harley’s eyes, a personal way of repaying him. The procedure proved remarkably successful: the man who had terrorized Gotham for more than a decade emerged completely harmless, with his sadistic humor replaced by childish puns, his schemes for social upheaval reduced to harmless ideas meant to make Batman laugh, and his fixation on pain and cruelty reduced to nothing more than a passing thought. With the Legion of Good preparing to reshape the world, Harley’s successful experiment may represent only the beginning of a far greater revolution in the treatment of dangerous minds.