Emerald is a 15-year-old transgender female. Her protector is Elizabeth Afton. She's always determined and doesn't agree with bullying. Emerald is in the Fighting Club since she gets in constant fights and needs to learn how to control her emotions. When someone says the trigger-words (That have to do with fire) since her whole family died in a fire, she shows her full form, which is what elemental tigers do. The problem is that she is one of the only elemental tigers left: the fire tiger. People are hunting exotic transformers like that and the Demon Healers. 

Her voice is low. It can be more to a medium but not boyish either. 

Deal with it.