Aromis

Aromis is quite brutal, mysterious, and while he's not a fighter, he's prepared to kill if he has to. He's a brewer of potions, whether he's using dark magic or he's using elemental magic. He has runes carved into his scales, which appear to splinter and crack around several places in his body, forcing him to wear bandages. His insides have also partially dried, turning into a somewhat gelatinous substance, making him rarely able to speak. But it isn't like he hasn't forgotten how to, either.
His ability to fly is both magical and natural, and he uses various methods of keeping himself up in the air. He's rarely touching the ground, except to sleep, which is also unusual for him to do. By logic, he shouldn't still be alive. Nor should he still be able to breed.
Aromis, while he often acts brutal or hysterical, actually has a few good traits. He's loyal, has an understanding of love, is fun to hang out with, and has never actually killed another dragon.