Ava is a 3 year old toddler but she can’t speak yet and she is the daughter of Jake and neytiri and the youngest daughter and she has a scar of a sarentu on her right cheek and Jake and neytiri don’t know where that scar came from and Ava was born with it. The family had to leave their clan because quaritch was hunting them so they went to Metkayina clan so they can hide and want to be in their clan and train them.