Diabolos

Diabolos is a powerful type of Abyss with the form of a demon.

Appearance
A Diabolos resembles a demon, with bloodshot eyes, a dark red mouth with dagger-like fangs, reddish-brown skin, and jet-black wings. Its height easily exceeds that of a large bear standing on its hind legs, making it a medium-sized Abyss. Its torso is triangular in shape, with a thick chest and relatively slender waist. Its breath is smog-like and purple in colour, while its blood is blue.

The anime depicts Diabolos as a little bigger than a normal Drag-ride. It has sharp claws and a pair of bat-like wings, but no eyes.

Abilities
Diabolos are powerful Abyss, with a single one considered to be capable of destroying a small town. A Diabolos is strong enough to crack a Drag-Ride's sword with a sweep of its arm and fast enough that skilled Drag-Knights have difficulty reacting to it. Diabolos can fly and are agile in the air, being capable of dodging concentrated fire from multiple Drag-Knights. Diabolos can also breathe fire.

If fatally wounded, Diabolos can self-destruct, producing a powerful explosion. This is preceded by their body swelling up and becoming covered in red cracks.