Katja is the fourth of the five characters I made using Masks RPG and several random background generators.
Katja is the oldest child of a large Swedish family living in Japan. Eventually she discovered that she and her siblings were adopted, or maybe appropriated is a better word. Her “parents” task was to monitor them growing up and prepare them for the experimentation that would later result in giving Katja her powers. When she was about eighteen, Katja was subjected to something that was a combination of a magical ritual and a scientific experiment. The end result was an ability to transform into a larger, more physically powerful monster-like form with glowing yellow lines along her skin. Her adoptive parents were appalled at the procedure and helped Katja and the other children escape though they died in the attempt.
In the two years since then, Katja and her family have been trying to stay under the radar and getting money where they can to live. They have fully naturalized identities within Japan, but are still cautious to avoid official attention because they don’t know who was running the experiment that they were living in. Katja provides most of the money and tends to short herself before any of her brothers and sisters, as a result her human form is scrawny and malnourished. It is likely that her monster form places a heavy strain on the body as well, but since joining the Chimera Sirens, she’s been getting a salary and medical treatment so she is slowly recovering. In the meantime, in her monster form she is still incredibly dangerous.
Katja has strong regard for both honor and justice separately. She tends to get rubbed the wrong way by Minako, the Jade Chimera, who she thinks only is concerned with justice as an outgrowth of honor and whom is also a bit officious and bossy for her tastes. Katja has talked to Kyou about training her, however.
http://thrythlind.blogspot.jp/2015/11/chimera-sirens-bull-onyx-marble-chimera.html