Dimos dragons are a rare species of ryūzoku. They are known to live only in the Katart Mountains, although they may also live in other places outside the mazoku barrier.
Some claim that the dimos dragons are the strongest of the ryūzoku, although this perhaps refers only to their physical strength, as the golden dragons and the ancient dragons are known to be more powerful overall. Their breath weapon is a kind of black plasma, called "void breath". Their hide is very resistant to magic, only spells which attack their astral body (such as black, holy or astral shamanistic magic) can be used against them effectively.