Winn

Winona, aka Winn, is extremely protective of her little brother, Phineas, and extremely untrusting of literally everyone else. She and Phin ran away from their abusive mom after an accident led to their father's (their protector) untimely death. They live on the run, but luckily Winn is extremely resourceful and knows how to live off of the land. Unfortunately, she runs herself ragged, giving nearly everything she finds or catches to her brother (though he tries his best to take care of her as well, bless him). She's also got terrible insomnia.

If it weren't for Phin, she probably would've given up a long time ago.

Winona is a sorta wild dog/crocodile hybrid, in case you were wondering.