Not really too fussy
Charlotte is pretty much a loudmouth; she'll say what she wants when she wants to say it. And doesn't really give a fuck for the consequences; mainly because she knows if someone starts something with her she can finish the fight they would start with her. She does have very little patience for overly drunk people. Charlotte does come across as overly confident with an air of cockiness; but she can also be chilled out and be the opposite of that cocky air; she doesn't back down from people either and tends to make people back down from her, despite the fact she's normally shorter than them.
Charlotte was born in Dublin, Ireland and actually had a somewhat normal life with her family before she moved away with her mother. As she grew up she was pretty much a fighter from the day she started school, her parents consistently having to bail her out of trouble with her teachers and the people she got into fights with. After a while and after she left school she started working in security; and after a while she got into working in security and since then she's had fun in her life and she's able to do what she wants and when she wants to do it, the work she does giving her way too much freedom now.
RP idea: I had two ideas for this dependent on how anyone wants to take it:
1. it goes down an abusive relationship route with MC and her girlfreind
2. WOrking at a bar she gets close to a barmaid