Zabastovka Molniy
Titan Weapons/Electric Armor Tanker
Via a rare semi-stable dimensional portal, the Lebedev Physical Institute established contact with the H'rrearow, a felinoid race. The H'rrearow possessed an electromagnetic sense, a survival trait on a world that spawned massive electrical storms. Rare individuals had the ability to generate protective EM fields, and were trained to become t'kzintar, warriors to defend the people. T'chsee was one of four H'rrearow chosen to return with these "Sav'et" explorers. When the portal collapsed and could not be reestablished, they were trapped on this world. The sole t'kzintar in the group, T'chsee joined Народная Армия to maintain her skills.
The H'rrearow were at the Sechenov Institute of Evolutionary Physiology and Biochemistry when the Devouring Earth attacked the facility. A building collapse threatened their lives, and the injured survivors were put in experimental coldsleep units to await rescue. They would wait for decades; access to the subterranean chambers where the coldsleep units were was choked by rubble and contaminated by the residue from the Devouring Earth attack, and with the collapse of the Soviet Union, excavating a ruin where no one was believed to have survived was a low priority.
Eventually, the ruins were cleared to make way for an expansion of the institute's facilities. The contamination of the foundation almost resulted in a decision to simply pour in concrete to seal off the area, but an offer by a visiting group of heroes from Paragon City to clear the area and sterilize the contamination was accepted. As the sublevels were reopened and cleared, the chamber holding the coldsleep units were found. Only one unit still functioned; the others had failed, and now held only skeletons or dessicated corpses. With the research project that had developed the coldsleep units also lost in the Devouring Earth attack, the Institute had no way to safely awaken the lone survivor, so the unit was taken back to Paragon City where more sophisticated investigation could be made.
Waking in an unfamiliar medical facility, T'chsee grieved for the loss of her fellow travelers. Queries to the Lebedev Physical Institute revealed that the portal to her homeworld had collapsed, and the researchers had been unable to reestablish contact. Alone and adrift in a world not her own, she was befriended by the heroes that had rescued her coldsleep unit. Recognizing her abilities, they offered her a membership in their group; expanding her role as t'kzintar to encompass the denizens of this world, she reassumed the name given to her as a member of Народная Армия and began her new career fighting crime with them.
(As a side note, both the Lebedev Physical Institute [Физический институт им. П.Н.Лебедева] and the Sechenov Institute of Evolutionary Physiology and Biochemistry [Институт эволюционной физиологии и биохимии им. И.М. Сеченова] are actual Soviet/Russian research facilities; when I use scientific facilities in a character background, I try to pick ones that actually existed, to help tie the background down a bit. Народная Армия, "People's Army", is my invention, one of several Soviet-era state-sponsored hero groups.)