Jubilation Lee is an American teenager of Japanese descent, was born in Berly Hills, California, where she lived with her wealthy family. His parents were immigrants. An immensely talented gymnast, she was believed to have the potential to participate in the Olympic Games. However, his life was shattered when his parents were killed by the assassins Reno and Molokai.

Jubilee was sent to an orphanage, but escaped from there and hid in a Hollywood mall, stealing food to survive. He discovered for the first time his mutant power to generate 'fireworks' of energy, with blinding or explosive effects, when he escaped from the security guards of the mall. The stress of escaping the security guards caused Jubilo to emit a huge explosion of luminous energy when he was in an alley. This completely disoriented the men and allowed him to escape. Upon discovering his mutant ability to create fireworks, he realized that he could get money using his powers to entertain the customers of the mall.