The Titan Phoenix (Rodan x Highschool DxD)

Romun Phenex is the younger brother of Risa Phenex and the older brother of Ravel Phenex. Well, was. You see, he was born... different. Instead of flaming wings, he had massive pterodactyl wing, and two horns, like a dragon. No one knew why, as he shared all of his DNA with his parents. As a result, his fathers despises him, and his mother ignores him. Risa starts to hit him and beat him, while Ravel takes care of him, along with each of the Risa's peerage as it grew. Sadly, he grew sick of it, and left vanishing form the Supernatural World altogether.