Rikki crossed over to Earth-616 in the 2008 Onslaught Reborn miniseries, in which she operated as Nomad for a time, later joining the Exiles in another reality after being repeatedly reincarnated in her grandfather's place, and then the Future Foundation in the mainstream Marvel Universe.

She is native to this world that was created by Franklin Richards in order to save his family, the Fantastic Four, and the rest of the heroes who 'died' fighting Onslaught.

Her brother John was involved with a radical group led by the Red Skull and through that contact she met Captain America, eventually becoming his protégé.

Rikki eventually formed a group of like minded individuals to bring order, and they called themselves the Young Allies.

Rikki heard that there was a new Captain America and she desperately tried to meet him, not knowing that he was James Buchanan Barnes, the Earth 616 counterpart to her own grandfather.

When she got back to her modest apartment (which she paid for by washing dishes in a restaurant), she found a brand new Nomad costume and a note that it was for her.

She was released and was made to reveal her identity to the whole school and publicly support the student council nominee, Desmond Daniels.

In order to establish themselves as a viable threat, the Bastards link up a video feed of the bound and gagged Rikki and Araña across New York City, with the intent of executing the heroines in front of a massive audience.

When the rest of the Allies arrive, they promptly defeat the Bastards, with Rikki taking down Pyro's son Ember.

Just as the Allies are about to celebrate their victory, Rikki is attacked and thrown through a wall by a newly arrived villain named the Superior.

As Rikki races inside the facility to locate Toro, she stumbles into the control room instead, where the sinister voice of her dreams beckons, clawing his way out of exile in the Negative Zone, the psychic beast known as Onslaught returns to the main universe.

After her death — and owing to Reed Richards and Molecule Man reordering the Multiverse — a surprised Rikki found herself reborn into other realities; mostly as the partner of alternative versions of Captain America.

However, an atomic bomb triggered by the Red Skull in New Jersey killed them both, only for them to find themselves back alive in yet another reality, where they joined the Exiles fighting the Tribunal, a band of rogue Watchers.

[11] Rikki later dies under unrecorded circumstances, to be reincarnated into yet another reality where she is in a relationship with Toni Ho until they are killed by The Maker one week after her mental reawakening.

She is sprung from captivity by the Future Foundation while they are seeking to reassemble the scattered remains of Molecule Man, one part of which Rikki had accidentally contacted.

As this came out after Onslaught Unleashed, this suggests that the character may return to life in the main Marvel Universe, which is later realized in the Future Foundation series (see above).

Due to the special circumstances of her creation, which was influenced by Franklin Richard's idolization of both Captain America and his own mother,[13] Rikki is repeatedly reincarnated into another reality after death, with her full memory of her past lives as well as selected injuries and scars and her trademark equipment.

She also made use of a vibranium-photonic energy shield along with vibranium soled boots that allowed her to run up walls, move silently, leap greater distances and land from great heights.