Raven LeBeau (Earth-1298)

As a child she and another kid were kidnapped from a secret facility by Gambit and Storm. Gambit was hired to do it by Sinister who then ordered him to kill the girl, since she was useless for his plans. Gambit refused to do it and instead adopted the girl.^[3] She was named Raven and raised by Gambit and his wife Bella Donna.^[1]

Years later Raven was kidnapped by Bastion,^[1] who brought her to Charles Xavier. Xavier planned to use her, Scotty Summers and X-Man as his psionic batteries to increase his power and take control over minds of everyone on the planet. The Six and other heroes managed to distract Xavier, while Scotty and Raven together attacked and injured him, forcing Xavier to escape. Havok then sent Scotty and Raven with Elektra to the X-Men's moon base, believing that Scotty would be safer there.^[2]

According to Cerebro Mark I, Raven is one of the most powerful mutants on the planet.^[1]

• Telepathy: Raven had not used any powers on her own, but together with Scotty Summers she telepathically injured Charles Xavier.^[2]

Raven being the genetic daughter of Jean Grey and Alex Summers created by Sinister in an unconfirmed fan-theory. There are no confirmation for it in any issues or editions of Mutant X or handbook entries about Earth-1298. And she apparently was not created by Sinister, since Sinister hired Gambit to kidnap X-Man and Raven from some facility.