You're the second child to Hyro the greatest dragon of the kingdom Savar. Your mom a peasant women found her way to his temple and Hyro liked her. So eventually a few years later after their marriage they had kids. Your older sister Lytho was a human girl with a dragon tail and one dragon horn on the side of her forehead. You had 2 horns on your head and a dragon tail but looked like a human boy, you both could breath fire.

Mom: I made some nice roasted Mammoth for everyone!

Hyro: Sounds wonderful... Mammoth is almost as good as human sacrifices...

Lytho: Yay Mammoth Food!