Messiah Complex
Hope was the first new mutant born since the Decimation. The moment she was born, Cerebra blew up and the town was soon attacked by the Purifiers, who had used information given from the time-traveling Sentinel Nimrod warning them of her arrival. Although all the children in town were murdered by the Purifiers, Cable managed to save her. According to him, the baby was the messiah supposed to save both mutant and humankind. However, according to the Purifiers and Bishop, she would become the equivalent to the Antichrist and kill a million humans in six minutes, turning humanity against mutants once again, thus leading into a new era of mutant persecution, the very time line in which Bishop was born.
The baby was later kidnapped by the Marauders and delivered to Mister Sinister, actually Mystique in disguise. She took the baby and made her touch the comatose Rogue. Gambit quickly took her away from Mystique, believing that she just killed her but he was amazed to see that the baby was alright and that it even cured Rogue. After a huge battle between the Marauders, X-Men, and Predator X, Cyclops decided that the baby would be better off with Cable, and allowed his son to take her to the future. However, an adamant Bishop decided to track Cable and the baby in order to finally kill her and prevent his future from happening.
Powers
Hope Summers with Phoenix eyes.At this point, Hope's power have not been explained. The only notable things are that when she was born, Cerebro blew up and when Mystique placed her on Rogue, she survived without any damage and erased all of the previous memories and abilities Rogue had absorbed, including those of the Hecatomb. She also cured Rogue of the Strain 88 virus. It should also be mentioned that during Messiah Complex when the Three-in-One tried to search for her when she was kidnapped by the Maruaders, she was able to block and disrupt Cerebra from finding her. While she's a child, she's already an excellent hand-to-hand combatant by copying Cable's movements. Despite not exibiting further powers, not even the ones displayed while an infant, Hope has become a keen observer and survivalist, able to find shelter and supplies with ease. She also has had the Phoenix avatar appear in here eyes hinting that she may be a vessel for the Phoenix entity. She has recently demonstrated powerful telekinesis (enough to stop a bullet in mid air), as well as possible telepathy.
Abilities
Has learned to fight from Cable by observing him