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A mysterious new Harlequin debuted in issues #5-6 of Green Lantern Corps. Quarterly, and battled Alan Scott.
As a little girl, she discovered she had illusion-casting powers. She learned all about the Green Lantern, Alan Scott, and how the first Harlequin became his lover. She knew it was her destiny to become the next Harlequin and to be with Green Lantern.
She created illusions of Icicle and Solomon Grundy for Alan Scott to battle, and then revealed herself to him. During that encounter, Scott mysteriously regained his youth. Though at first he thought this an illusion, he later learned that the original consciousness of the Starheart had been reawakened, and M'La had been tortured and slain.
During her battles with Scott, she eventually attacked his wife, Molly Mayne-Scott (the first Harlequin). She created illusions of a decrepit version of Molly, while she flooded Scott's head with visions of them together (in space, as barbarians, as detectives and eventually as medieval warriors). Scott was able to break free when he unleashed his simmering rage against her, and showed her a world where he ruled over Hell, and she was his captive slave. She stopped the battle, and fled away shouting that he had ruined everything, and instantly disappeared into the air.
She returned and made an appearance in Alan's dream sequence in Underworld Unleashed: Abyss - Hell's Sentinel #1. She also appeared in Hell alongside the other villains called by Neron in Underworld Unleashed #1.
During Underworld Unleashed, a character named Fay Moffit became the new Spellbinder. She bears a striking resemblance (both physically and in terms of powers) to this mysterious Harlequin. Although very similar, they appear to be two separate characters.
Read more about this topic: Harlequin (comics)