Harley Quinn

Harley Quinn, previously known as Harleen Quinzel, was a renowned psychologist until she fell under Joker's spell, falling into madness as quickly as she fell into love. She's incredibly loyal and chaotic. She acts according to her own will, commiting terrible crimes with the same ease as when she commits acts of kindness. She's mentally unstable. She lives in Gotham and spends much of her time inside the Arkham Asylum for the Criminally Insane.