Dark Elena

Dark Elena is a Succubus Soul from a Dark Soul Gem, a powerful diamond-like stone crafted in Hell by the Devil to imbue his demons with greater power.

This Dark Soul Gem in particular contained the soul of a Succubus, which ended up possessing the body of Elena, a powerful and very beautiful Witch that had become infamous for her beauty.

Biography
After Elena is attacked by evil Witches called Warlocks, she wanders the forest and stumbles upon a Dark Soul Gem. Thinking it's a purified stone, she unintentionally calls the dark magic from it, allowing the Succubus Soul known as Dark Elena to possess her body.

Dark Elena then goes to Elena's house, where she gropes herself and moans with delight at Elena's gorgeous form before telling herself in the mirror that Elena's body was now hers.

Later, she seduces and has rough sex with Darcy Lewis, making her fall in love with her.

Powers

 * Demon Strength: Dark Elena possesses strength far greater than humans.
 * Demon Speed: She can run, move, and react at superhuman levels.
 * Seduction: Like Elena, her dark self is extremely seductive and manipulative.
 * Regeneration: Dark Elena can heal and regenerate from various types of injuries, including stab wounds, cuts, severe burns, and even severed limbs.