Sei Study

Sei's never had an outfit I've really liked so, during my "I don't have a computer time" I set out to craft a look for her that I liked other than butt-naked. I came up with this and I think it fits hers adventurous tough girl personality to a t. Plus some close ups of her grappling claw and dual swords. I draw Sei a lot but never really talk about her and, as some unusual notes have proven, at least a few people are pretty interested in her. I'm not used to talking about my characters outside of actual stories but I can try to rattle off some things about her: She's a talented courier/thief in her water bound hometown of Rafters, as she can essentially do any job that requires speed and discretion. She's not an assassin but would not be above killing someone. She's bisexual, terrible at romance, can barely read or write (she's a slummer after all, and thus hasn't learned much), she's not stupid, loves motorcycles and heights and is extremely unorganized.

Apparently people like to know about characters even if it's not directly through a story? Am I really stupid for not knowing this?

*quick note: in my notations I say the canister that powers the launching apparatus on her grappling claw is Co2 but I doubt that's powerful to actually work. Anything that actually would or do I need to make up some pseudo-science?