Hector

Backstory: Hector grew up in a den with no real love or social interaction. His mother was emotionally distant and his father a hardened warrior. His mother left his father when he was just a hatchling, so he was left alone most of the time while his father fought for his clan. He swore to never become like his father, but time changes you. Hector realized too late that he wasn't fit to be a father, so he abandoned his family and his children as to not traumatize them as his father did to him. He doesn't allow himself the time to reflect or regret these decisions he's made. He has a steady flow of trainees, and since he's poured himself into his work so much and for so long he is the best of the best- a legend among his clan-members, and he has dragons wait to be trained by him specifically.