A fox Kemo born on Earth, Crysha was adopted into a mechanic’s family. While she learned a few things about mechanics, that wasn’t where her interest lied. No, she was much more interested in the digital side of machinery - Particularly the EVAs that had become commonplace for space travelers. These, she was fascinated by, and decided to dedicate her life to studying and learning from them. As such, she is capable of manipulating any EVA she wants.
This, of course, wasn’t a good thing for long. She started with jobs working on shuttles and space stations, which she used to study the ESSAs and EVAs whenever possible. Eventually, she started making programs of her own. At first, they were fun little things that the AIs found amusing. However, then she decided to see if she could rewrite part of an EVA’s code. It didn’t work, the EVA busted her, and she had to flee from the alerted authorities by hijacking one of their fighters.
Now wandering space more or less alone, Crysha still continues her work learning and improving her skills in manipulating EVAs. Eventually, she used this to steal a larger science vessel, so she could have a home that wasn’t cramped like the starfighter. She creates upgrades and viruses alike for EVA units, whatever she needs to do to make sure she’s still well supplied without going to a station, as she would likely be arrested immediately if she dared enter one again.