|First appearance||Astonishing Exiles #1|
Little is known about Jen Swenson's past except that she is a mutant with super-speed. She was also disowned by her father for being bisexual and her mother died when she was very young. She is still very perky.
Jen was plucked from reality by a being called the time broker. He told her as well as the others that something had gone wrong in her reality and they must work together to fix it. On their first mission they were sent to a reality where Magneto and his Brotherhood of Evil Mutants fought and won World War 2. They now rule the planet and their mission was to kill Magneto and end his reign. Jen was one of the three to keep the Brotherhood busy while War Machine executed Magneto.
Their next mission was in a reality where Captain America was thawed out in the year 2099. They had to help the Avengers 2099 to defeat the Alchemax Enforcers and kill Walker Sloan before he can travel through reality and form his own Exiles. Jen was the one who ended up killed Walker by grabbing him and running across the world at supersonic speed making his evaporate under the pressure.
Their next mission was in a reality where Spider-Man was an agent of S.H.I.E.L.D. Their mission was to make sure he died in battle against Baron Octopus. The others went through with it but Jen was tired of ending lives so she warned him about the potential danger but he ignored her thinking she wasn't worth his time. He went into battle and his heart was ripped out by Baron Octopus.
Their next mission was in a reality where the Fantastic Four consisted of Peter Parker/Pyre, Susan Storm-Parker/Elastic Woman, Johnny Storm/Nowhere Man, and Hank Pym/Beast. The two Johnny's became best friends. Their mission was to kill Reed Richards, who was the leader of the Frightful Four. Once again War Machine ends this mission.
Their next mission was in a reality where every superhero except Colossus had been turned into a monstrous sombie. Their mission was to wipe out the zombie plague. During the mission Colossus was zombified. Phoenix was the one to activate the device that blew up all the zombies.
Their next mission was in a reality where Professor Xavier shared Magneto's dream and he helped him form the Brotherhood. Their mission was to form this reality's X-Men and get Professor Xavier to join them. Angel convinced him in the end.
The Exiles went on many more missions and she would eventually date Juggernaut.