>>113987142She's the daughter of a wealthy businessman, and a genius inventor. In grade school, she was an ugly kid who bullied around C-ko because she had a crush on her. But A-ko always stepped in to stop her. She developed a complex over A-ko always having to be the "hero", while she never got any appreciation. A-ko and B-ko swore to have a battle to see who got to "keep" C-ko; but it never happened, because B-ko moved away.
In the remaining time, B-ko became smarter and prettier; developed tons of robots and battle suits; and is the leader of a girl clique at her school. But even when A-ko and C-ko have forgotten all about her, and pretty much laughed the whole experience off, B-ko's still infatuated with C-ko; and still has a grudge against A-ko.
There's also an alternate universe where they're actually the Dirty Pair, but that's a separate canon.
>>113986888I feel like she'd swap a lot, but end up settling in Anti-Hero territory at the end of the day. Most of her motivation is either to get C-ko's affection, or to settle petty squabbles with A-ko. I can see her dad getting involved with some darker business, for sure. She might struggle with a victim complex or pride; but she'd probably wouldn't see any reason for fighting other heroes unless they're directly standing in front of A-ko. And at the end of the day, she does protect the Earth - even if she's very quick to go back to fighting A-ko once it's over.
