Tomboy (Bokukko): confident, likes to tease, highly competitive.
Genki: loud, energetic, super optimistic and confident. Motivator.
Tsundere: Tough outside, soft inside. Hot-headed, refuses to show weakness, secretely cares for people.
I personally like Tsundere's, but I don't know if it fits for this character or not. In the end, she'll prolly be a combination, but I really need a starting point to get over this creative block.
Most Helpful Girl
Tomboy and Genki would work really great for her. I can definitely see her with a mix of both of those tropes 😊. She looks really awesome by the way, nice job on the artwork!
Most Helpful Guy
Cheeky tomboy seems most like the presented expression.