Emperor Dragon

"The Emperor Dragon hails from the east, where all light is born, and where he learned to harness this radiant energy to cause damage. His power is renewed from the circle of light at the center of the arena, and his rivals are exposed to such intensity that they tend to fade away.."

- Description

The Emperor Dragon is a dragon that appears to have settled in the Dragon Islands of Dragon City.

Biology
While it allegedly hails from the east, it appears to be a variation (possibly a subspecies) of the Martian Dragon, which it greatly resembles. Its elemental makeup includes light, metal, pure and dark, all contributing to its powers.