Harley, the former girlfriend of Jack Napier (The Joker), left him after his years of abuse and realizing that he only loved Batman and would never truly love her, finally being driven to leave him after he apparently murdered Jason Todd. After Harley left, another girl snuck her way into the Joker's life by pretending to be Harley herself, imitating her persona. The Joker didn't even notice that the imposter wasn't the actual Harley Quinn. Years later, after Jack Napier's curing of his insanity, he returned to the fake Harley and proposed to her, leaving her bemused. The real Harley then kicked the fake unconscious and explained her reasons for leaving to a guilt-ridden Napier, before joining him in his crusade: to become a hero of "the 99%" and to destroy Batman by vilifying him in the public eye.
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- 8 Appearances of Harleen Quinzel (White Knight)
- 6 Images featuring Harleen Quinzel (White Knight)
- 3 Quotations by or about Harleen Quinzel (White Knight)
- Character Gallery: Harleen Quinzel (White Knight)