I was held up by thinking of a name.
Appearance: They're quite an alarming girl. Black hair.
Name: Mizushima Kasumi
Age: 18
Gender: Female
Personality: Despite the way she dresses and essentially being a delinquent, Kasumi's a good person that doesn't believe in violence for its own sake--but she does believe in fighting to
prevent the fighting, no matter how counterproductive that ends up seeming. She is, also surprisingly, pretty good in class... for all that she flouts the rules outside of it.
Hero Appearance: Bike included.Hero name: Volt Lancer
Powers: Obviously, she has a pretty overdone motorbike--which
also transforms, from the bike she normally has anyway. Even if she transforms away from it, it'll arrive pretty soonish, provided that Kasumi is stood outside in the first place. Her actual 'powers' would seem underwhelming to most heroes: she pretty much just attempts to fight you with her weaponry, or even her bare hands. Even the weaponry's electric shocks don't really do all that much.
There's a big secret, though: she's a cyborg. Even untransformed, she's got to work to not give away her raw capabilities. Transformed, the suit goes towards augmenting this. She'd really like to actually have some sort of finisher rather than needing a 'death of a thousand cuts' style approach against tough enemies.
Transforming item: The transformation item is sticking a key into a belt buckle, and twisting. Always good to keep with tradition.
History: Kasumi fell in with gangs more or less by accident, just by hanging out with the wrong people and following along. Not content with any violence, though, she worked on putting a stop to it by becoming bigger and scarier than any of the others. It wasn't something that the girl was having much success with--until, one day, she was in an entirely too coincidental motorbike accident.
The doctor there when she woke up explained that, had she been treated by anyone else, she would be quite dead by now. Instead, she'd been saved... at the expense of being turned into something that was no longer a normal human. The cost for this miraculous treatment? That she use the power it granted to stop villains.
The strange scientist probably wasn't too happy about her becoming a major gang leader at the same time, but hey, crime rates are down a bit.
Other: Nope.