Derkila

Derkila, aka "Delkira," is the One Demon King of the Demon World. He is the most powerful and influential demon in society. However, his whereabouts are currently unknown.Derkila is an extremely tall demon, taller than Sullivan, with fair skin, waist-length purple hair with a small section tied into a round bun, and several strands covering the upper part of his face. It has pointed ears, dark claws, and white horns that curve sharply upwards.

The clothing most often seen on him was a tight purple sleeveless top, a separate long sleeve of the same color with gold trim at both ends, long white pants, a gold belt, and purple casual sneakers. He also used some accessories; he wore a red leather accessory with a hello on it, a gold necklace with an engraved symbol, several rings, and a gold anklet.Derkila is shown to have a laid-back personality who loves keeping himself entertained. Fairly mischievous but still smart and responsible. He seemed to bear great adoration for the Demon World; in turn, the Demon World adores him.

Once, after Sullivan briefly mentioned a narrative of Derkila, Iruma commented that he was probably a very fun and interesting Demon King, to which Sullivan agreed.[2]

According to Sullivan, Derkila had an aversive attitude towards the Thirteen Crowns and their meetings, calling them "idiots," albeit lightheartedly.

Understanding Delikira's true personality means looking at the current state of the Netherworld, as it is an extension of the demon king.Little is known about Derkila besides the fact that he was the Demon King a few hundred years ago but has now mysteriously disappeared. Before he vanished, though, Sullivan was a subordinate serving Derkila, and they were especially close. Including another Thirteen Crowns member and a musician, Amduscias Poro.

People say that Derkila once stopped a war at Death Square by catching every weapon with his body, not allowing a single demon to be injured except for himself.