So I finally drew up a character sheet for her.
I think I'll explain some back story now though ^ 3 ^
She's shy and really skittish, if spoken to by anyone she has a bad habit of putting food in her mouth and shaking her head, because it would be rude of her to speak with a full mouth. She's quick to hide behind her brother from most things, even people she's familiar with and animals as well. Her horns are very sensitive, and may become enraged if someone tries to grab them. She keeps her hair short because when she was little, it used to be long and drag along the floor and sometimes she would accidentally step on it and scare herself.
I'm terrible with trying to describe anything, so maybe if you have questions you could ask ; A ;
She and her twin brother were born on a planet, not to far from Earth(haven't decided which one yet). Their kind was created and raised there by a secret organization of humans creating them to be future weapons for the Earth, mostly to fight other countries and gain power. For hundreds of years these creatures, bred with humans and animals, weren't aware of why they existed or what was even out there. They were taught to believe, humans were their Gods, they were to worship them, bring them offerings, pray to them, etc etc. Eventually, there are uprisings of these creatures, they don't believe humans to be Gods, and they dig deeper into where they come from, finding out their true purpose and that they were going to be sent into war soon. So they retaliate and start war on the humans. Of course humans being as they are decide that if they can't control them, they'll just destroy them and start again from scratch to make them even more 'perfect'. Though, there are a few humans who know these 'creatures' are more than just puppets and try to save them, one man taking a woman's two children onto his spacecraft and hiding them as he went back to Earth, everyone else completely destroyed.
These two twins know nothing of their past, as this man raises them in an isolated village within a mountain, with people who are aware of the twins, and do not fear or hate them. They grow up there and the boy starts to become curious of what's past the mountains, what does the rest of the world look like. There, he starts to sneak out now and then, peaking around in neighboring towns, until he's noticed and the two twins have to go on the run.
This is all I have for now hehehe, hopefully I can get some more detail in here at some point ~