Anitta

Anitta can be found right next to your house after you leave, and you can recruit her by accepting her request.

If you refuse her request twice, she will give you money to join.

Her quirk in battle is being a gambler, and aside from throwing water and oil, all her moves are completely random.

She also has a high affinity to trash.

The game itself describes her as:

"Garbage goth girl. Likes gambling. Kinda suicidal sometimes."