2, in the short-lived Runaways spin-off title Loners, and presumably as a background character when that team later appeared in the miniseries War of Kings: Darkhawk (though she is not identified specifically at any point during this series).
Julie has also appeared in several non-canon alternate continuity titles such as Exiles, Marvel Zombies vs Army of Darkness and various Power Pack miniseries aimed at younger readers.
[2] She continued to operate with Power Pack through their entire history, later relocating to Los Angeles to live on her own after quitting the team in unrevealed circumstances.
[3] She frequently stepped into a maternal role with her siblings, sewing and washing the team's costumes, caring for Katie and Franklin Richards and attempting to restore peace during conflicts.
[12] Julie's personality detailed above changed during unrevealed circumstances and she was reintroduced during the 'Runaways: True Believers' story-arc as a flighty, naive, wannabe actress who lacked worldly experience despite her many adventures with Power Pack.
However, she (as well as the others within the group) agree to go on a mission offered by Rick Jones (though they do not know his identity at the time) to return the Runaways to the foster care from which they had escaped at the conclusion of their first series[16] in exchange for one million dollars and a refitted Quinjet.
Though this initial mission for the fledgling Excelsior team was a failure, they spend the next few months continuing to pursue the Runaways regardless,[17] before discontinuing their pursuit and deciding never to use their powers ever again in unrevealed circumstances that occurred sometime before the beginning of the Loners miniseries, but which could be related to the events of Civil War.
[18] She claims that her 'alien metabolism' allows her to recover quickly from the wound, and she - apparently jokingly - suggests this is also why she is so skinny,[19] though it is not explained how her healing ability works now that she is separated from her siblings, as physical contact between them is required to heal grievous wounds,[12] while the ability works passively if they are in regular contact,[20] and they become prone to debilitating sicknesses and viral infections if kept apart from each other for any reason.
[21] Julie reveals to the group that her flighty personality and seemingly low intelligence is really a facade that she adopted when she moved to California, that she has merely been pretending to be unintelligent for the preceding two years in order to fit in with the rest of her teammates,[19] and also that she has not registered with local authorities as an active superhuman.
[26] During an earlier encounter with the Runaways, Julie and Karolina Dean express a close personal interest in each other in the middle of combat before they are rudely interrupted by Molly Hayes.
In her despondent mood, Julie ended up consuming a magical cupcake originally given to Molly Hayes by her new schoolfriend, Abigail,[31] a 13-year-old girl rendered ageless by a gift from the Enchantress.
[34] During a mission in a space prison to help reassemble the disintegrated Molecule Man, Julie encountered the reality-displaced Rikki Barnes, which resulted in a mutual romantic attraction.
[35] Julie's original power (and that most associated with the character) was unaided flight by means of rapid forward propulsion that left a highly visible tri-colored band of light in her wake.
Julie could only remain aloft while in motion, however, as she discovered when she first used her powers, only managing to stop when she accidentally collided with the bulkhead of a Snark starship and broke her arm.
Julie also learned to make herself taller and larger without transforming into a cloud - though she still retained the same mass and would become tired when increasing her height and stature for long periods of time.
[41] In unrevealed circumstances at some point between the Power Pack (2000) miniseries and her reappearances in both the second Runaways series and the Loners miniseries, after returning to her original codename once again; Julie learned to refine her powers so she could now hover in the air without having to accelerate to stay aloft,[42] and could also now physically stand upon her own rainbow trail, use it as an impromptu cushion against falls, or even as a hammock.
Julie is the first Power sibling to use this ability, albeit unconsciously, when her broken arm mysteriously heals quickly during the Pack's initial conflict with the Snarks.
[52] In Exiles: Days of Then and Now, Julie is a member of Quentin Quire's unnamed team of superheroes, the last survivors against the Annihilation Wave that was led by a banished Hulk.