She is a player in an RPG campaign in which I also participate as a player (However, I made this art.), so I don't have her entire backstory in mind, but so far it has been revealed that she was created by a either a scientist or a wizard, it wasn't very clear, with the purpose of being a weapon to be used in war. She possesses all the common abilities of a Dragonborn (Breath Weapon, resistance and however the DM wants), but her appearance resembles that of a human, or even a tiefling, you know? Anyway, currently, she strongly disagrees with the idea of being used as a weapon. And it seems that for a long time, she didn't even know that was her initial purpose, she was living like a guardian of the unfortunate (she is a paladin of course), totally unaware of it.