Nero is the shy and soft spoken child that the team is contracted to protect. She comes from a rich family and is next in line to take over the family and is in danger because of it. 

She doesn't say a whole lot at first but slowly begins to open up to the team after a while. She does not want anyone to get hurt because of her however. I do picture her, although younger sounding, to sound more proper as she is an heiress.