Jean Grey (Earth-9250)

Marvel Girl was a member of the X-Vampires who was turned into a vampire by Wolverine, Lord of Vampires. After the Demons of Limbo begin invading Earth, Jean Grey was empowered by Mister Sinister who gave them the powers to defeat the demons, as long they exiled themselves from earth afterward. Jean Grey travelled to the Dark Dimension, where she was convinced by The Whisperer to unleash the Phoenix Force and used it to kill Goblin Queen and Dormammu.^[1]