Jesse Aaronson was orphaned at the age of five after his brother Christopher used his mutant powers to make their parents' car crash.

The two are put into separate foster care systems, with Jesse eventually joining Charles Xavier's Mutant Underground Support Engine (M.U.S.E.

He and Domino battle the Prime Sentinel Gryphon before reuniting with Christopher, who has founded a new incarnation of the Hellions and become known as King Bedlam.

[3] Bedlam possesses the mutant ability to sense energy signatures and generate a bio-electromagnetic field that disrupts machines and the minds of others.

[4] As part of his training with the Mutant Underground, Jesse is a skilled hand-to-hand combatant and adept in covert ops and intelligence gathering such as computer hacking.

[8] During the "Dark Web" storyline, the tampering done by Madelyne Pryor causes the Venom Symbiote on Eddie Brock to turn into Bedlam.