Her name is Weeb chan.
A full fledged weaboo who is also a dangerous hitman.
Her goal is to have enough money from her job to get plasfic surgery to become a 'real anime girl'.
She acts like a 'cute anime cat girl', speaking mostly Japanese in a super cutesy neko-like voice.
She is fullfledged American, but hates her original culture even hiding it from others or refused to speak english.
She gets utterly pissed if someone calls her by her real name, which she beats up or give death threats to them.
Overall...she's just kinda messed up.