When young Zane Yama was bullied by school bully Miller Hallendale, he discovered that he had inherited the powers of his father, the unstoppable Juggernaut, a reformed hero and member of the X-Men. J2 lived most of his younger life without the guidance of his father, who had gone missing on a mission with the X-Men. His father's powers, received from the mystical Ruby of Cyttorak, transformed their wielder into a large behemoth with enchanted armor, granting amongst other things, super-strength and enhanced endurance. It was through an act of will that Zane could transform himself into a similar appearance, with armor which he had to fashion himself, also granting him super-strength and heightened endurance. A constant trademark of his costume was his father's flannel shirt tied around his waist.
Calling himself J2, Zane was offered membership to the group called A-Next, themselves also children of heroes, notably, the Avengers. Although J2 was also offered membership with a group known as the Uncanny X-People, led by an older Jubilee, he turned them down, albeit remaining friends with the team and assisting them on a few occasions. Similarly, Magneta, the self-styled mistress of magnetism, offered J2 a spot amongst the new villainous group she was forming, but she was also turned down. J2 later learned of the reason behind his father's disappearance from Cyclops, leader of the X-Men. Juggernaut was being held prisoner by a villain called Nemesus in an alternate dimension. Thanks to the Sorcerer Supreme Doc Magus, J2 was able to locate his father and then rescue him. Later announcing his retirement, Juggernaut was content to let J2 to carry on his legacy, having proven himself worthy of the powers he wielded. Zane seems to have a crush on Wild Thing, and vice versa.
District Attorney Sachi Yama