Here's his profile, if your curious:

Name: Akumu (Nightmare)
Species: Kage Ryuu (Shadow Dragon)
Age: 450
Lives: at the Bottom of the Ocean, or in the Ozone Layer.
Personality: Isn't too fond of humans. Is reclusive and silent.
Story: He grew up at the bottom of the sea, but one day disobeyed his parents and went up to the surface and was attacked by humans and taken into captivity, where he remained for 150 years. He finally escaped and flew up into the Ozone Layer, where he remained, watching over us. Sometime in the 1800's he came down and influenced the creation of Nuclear warfare and liked to sink submarines as a hobby. The scars on his right eye are from the debris of a U-boat he blew up sometime in the 20th century.
Special Abilities: He can grow and shrink to any size of his liking. He can change his appearance to as small as a garden snake, to as large as an aircraft carrier. He also has the ability to show people their worst nightmares, and eventually causing them to commit suicide.