Magenta (Arrowverse)

Magenta is a metahuman who appeared in the third season of The Flash as a main antagonist in the episode Magenta.

Before
Frankie Kane is a young orphan who has a dual personality inside her, without her knowing it. During these years and when she comes with a new adoptive family, since the latter was abusive and violent like her. At some point, she was approaches by Alchemy who promised her metahuman powers since she had them in the altenate timeline of Flashpoint, which was altered by Flash. And when using the Philosopher's Stone, he gave Kane the powers, but she was somewhat reinforced with her sadistic and cruel Magenta personality that made her take control of Frankie's body.