J2

J2 is the son of the Juggernaut in Marvel's MC2 alternate future, a teenager who discovered he could transform into a powerful, Juggernaut-like behemoth. Debuting in What If...? #105, he went on to become a next-generation hero in that timeline.

Born in the pages of What If...? #105 in 1998, J2 is a Marvel Modern Age creation from the imaginative duo of Tom DeFalco and Ron Frenz — the same visionary partnership behind some of Marvel's most beloved legacy storytelling. A figure rooted in the rich "MC2" corner of the Marvel Universe, J2 shares adventures with a stellar cast of next-generation heroes including Spider-Girl, American Dream, and Cassandra Lang, placing him squarely at the heart of that imprint's optimistic, future-forward energy. With his own dedicated solo series alongside prominent roles in Spider-Girl and Avengers Next, he carved out a genuine niche across nearly a decade of publishing, and two of his appearances carry collector-recognized key status — always a mark of a character who made a real impression. If you're drawn to that warm, legacy-driven corner of Marvel where the next generation steps into the spotlight, J2 is absolutely worth a spot on your pull list.