Jubilee (Jubilation Lee)
The daughter of prosperous Chinese immigrants, Jubilation led a charmed life, attending exclusive schools and becoming a talented gymnast.
Unfortunately, in one terrible weekend, Jubilation's parents lost their money in the stock market and were killed by hit-men. Though Jubilee was sent to an orphanage, she ran away and hid in the mall, stealing to survive. Whilst escaping some mall cops, Jubilee's mutant powers manifested and she would often use them to earn money from entertaining the public.
The mall grew frustrated and hired the mutant hunters known as "M-Squad" to capture her, but fortunately, Jubilee was rescued by Dazzler, Storm, Rogue and Psylocke. Grateful for their aid, Jubilee joined the X-Men, becoming a daughter figure to Wolverine especially.
Eventually, Jubilee needed to get out of the X-Mansion, joining a new group of teen mutants known as "Generation X" under the command of Emma Frost and Banshee. There, she was a valued member and finally brought the man who killed her parents, Hunter Brawn, to justice!
After the Scarlet Witch's greatest mental breakdown resulted in the depowerment of all but 198 mutants, Jubilee lost her powers. She then made a safehouse for vulnerable ex-mutants and her life would change for the weird when Xarus (Dracula's son) turned her into a vampire to help him feast on the few mutants left.
Xarus would be defeated and a small group of vampires called "The Forgiven" would teach Jubilee to resist her dark urges until Quentin Quire used the Phoenix Force within him at the time to cure her and restore her mutant powers. Now back to as normal a life as she can afford, evil better watch out for the blinding heroism of Jubilee!
POWERS: Jubilee's mutant power allows her to generate lumikinetic explosive light blasts, essentially "fireworks" made of unstable light energy that explode. As a result of being so attuned to these fireworks, her mind can resist telepaths. As a vampire, she was physically enhanced, immortal, could rapidly heal, turn into mist and had fangs and claws.
WEAKNESSES: Jubilee has the same physical limits as that of any mortal and can't complete math problems.