T.J. Wagner is the daughter of two of her reality's most successful heroes, Nightcrawler of the X-Men and the Scarlet Witch of the Avengers. She was raised primarily in the X-Men Mansion. Her mother continued to serve with the Avengers separated from Nightcrawler since her parents were unable to effectively go on missions together without compromising their team's safety. Nocturne trained hard and eventually became an X-Man. She fell in love with her fellow X-Man, James Proudstar, and had a tumultuous relationship with him
Powers: Able to intangibly enter other's bodies and possess them for up to 12 hours. After she departs, the possessed is usually dazed and sometimes left comatose for up to 24 hours. Able to fire "Hex Bolts" consisting of energy from the dimension her father teleports through. Limited telepathy. Her connection to her father's dimension renders her functionally invisible in the dark.
Her physiology grants her incredible agility.
Nocturne possesses indigo skin, three fingers and toes on each hand and foot (respectively), pointed ears, a retractable and prehensile tail, and no visible pupils.