The elder brother of the twin superheroes Brian and Betsy Braddock, he is a mutant possessing the ability to manipulate reality in a variety of ways.

Jamie Braddock first appeared in the UK title Captain Britain Weekly #9 (Dec. 1976), and was created by Chris Claremont, Herb Trimpe, and Fred Kida.

Starting out with minor crimes, Jamie eventually became involved with robbery, murder, and slave-trading in Africa, resulting in him being kidnapped by Doctor Crocodile, an African scientist (also a former R.C.X.

His brother and sister attempted to restore him and heal his fractured psyche using Betsy's telepathy, but he ultimately rejected their offer, expelling them from his mind and returning to a catatonic state.

Jamie was briefly seen in Uncanny X-Men #462-465 in the tie-in story of House of M, in which Mad Jim Jaspers, another British villain with reality manipulation powers, also mysteriously reappeared.

During the conflict that follows, Jamie decides that he cannot allow his sister to be used as a pawn again, sacrificing himself instead to save the universe from the First Fallen, the Foursaken's master.

Jamie appears briefly in Captain Britain and MI: 13, helping Brian find his way through an illusion created by the demonic Lord Plokta.

Jamie appears alive once more, alongside his brother and the Captain Britain Corps defending Otherworld from the forces of a powerful sorcerer called The Goat.

Though he initially appears to be reformed and cured of his insanity, it is eventually revealed that The Goat was in fact a corrupted future incarnation of Jamie who was intent on consuming the multiverse to achieve godhood.

As his power grows, Betsy, left with no alternative, telepathically forces her twin, Brian, to kill Jamie by breaking his neck, erasing The Goat from existence and ending his threat to the multiverse.

[3] Jamie however was apparently resurrected by a group of magicians that became his followers, as he turned up alive and well searching for the Space Stone that was under Black Widow care.

The two meet on the field of battle, and Apocalypse offers his terms - a fight to the death between their two champions, Betsy (the current Captain Britain) and Brian Braddock (the former).

With Brian dead, Apocalypse demands Morgan's surrender, promising her exile if she allows a new monarch of Otherworld to ascend – Jamie Braddock.

But all is not over as Jamie Braddock later calls upon a brusque Apocalypse who is secreted in a laboratory and appears to be experimenting on Morgan le Fay, a process the backmatter implies is meant to allow him to engineer an Otherworld/mutant hybrid.

Jamie's power allows him to perceive the universe as a mass of quantum strings which he can pull and twist to alter the fabric of reality to his whims.

Originally, his reality warping was relatively limited; he could only affect dense forms and needed to be close enough to pull on the quantum strings surrounding them.

After the Mutant-Human war had calmed, Jamie disappeared without a trace, and Magneto had asked that the oldest should take control of the United Kingdom: Betsy was appointed but refused; Brian accepted.