This change was retroactively established years later to be the result of a body swap with the ninja assassin Kwannon (created by Fabian Nicieza and Andy Kubert).

Following 29 years of publication history, both women were returned to their respective bodies, and Betsy claimed the mantle of Captain Britain from her brother while Kwannon became the second Psylocke.

After being rescued by the New Mutants and taking up residence at their mutant-training academy, Braddock is formally invited to join the X-Men and officially adopts the codename Psylocke, becoming an enduring fixture of the team over the next three decades.

During the Hunt for Wolverine storyline, the psychic vampire Sapphire Styx absorbs the entirety of Braddock’s soul, leaving her body dead.

[5] During the Dawn of X, Braddock subsequently took up her brother Brian’s former title of Captain Britain, forming a new iteration of Excalibur with Apocalypse, Gambit, Rogue, Jubilee, and Rictor, to protect the Kingdom of Avalon.

After the apparent murder of her long-lost daughter by a threatening artificial intelligence called Apoth, Psylocke assembled a new team of Fallen Angels with X-23 and Cable.

[12] Following the Apoth incident, Psylocke was assigned to monitor Mister Sinister’s new team of Hellions, composed of mutants considered too violent or troubled to assimilate into Krakoan society.

However, in a Marvel storyline of 1989, Acts of Vengeance, she was "physically transformed into an Asian woman by a villain seeking to brainwash her and turn her into an elite assassin for a group of ninja warriors.

This version is the half-Japanese orphan daughter of a local Japanese woman (who died when she was a baby) and an English expat trader (who committed suicide when she was a child after his business failed), who is forced into the yoshiwara to survive and grows up to become the top-ranked prostitute (codenamed "Butterfly") in a high-end brothel.

She crosses paths with this Earth's version of Wolverine (who is also reimagined as a 17th-Century Japanese samurai, along with Punisher, Deadpool, and Hulk), who becomes her regular customer.

[23] Psylocke, primarily based on Betsy Braddock's characterization while her mind was in Kwannon's body, has been adapted in various forms of media, including films, television series, and video games.

The Sai incarnation of Psylocke from Demon Days: X-Men appears as a playable character in the video game Marvel Rivals.