Takashi Suzugamori

Takashi Suzugami, he is legendary who once was called the Dragon Emperor a wizard who led the Ten Hero Saints, prior to the story, and went on destroy dragons who tried to wipe out humanity. After using his Pyromancer heritage he has destroyed so many other enemies that he even was said battled in the past, Acnologia about 7 month prior to changing into a full-grown dragon shape.

He was sealed by his former allies in a temple, for his acts of cruelness, using his own blood as the key to seal him in a solid stone rock, which kept him frozen in-time to sleep.