First Demon

A demon with the appearance of a centaur. Created by the Demon King as his first being to govern the demon world, it is considered his other half. However, intoxicated by its immense power, it rebelled against the Demon King and was punished by having its body and soul split into two, serving the Demon King's son as Chandler and Cusack. It can only wield its true magical power in this form, but when it returns to its original form, it is cursed to have its body gradually disintegrate as punishment.

Revived in Camelot to ensure the defeat of Merlin and others, it overwhelmed Escanor and Merlin, and even gained the upper hand against Ludociel, but was blown away by a strike from Mael's Grace and split again.

Magic Power "Crisis"

In exchange for depleting its own life, its attack output continues to increase. After revival, due to the disintegration of its body, the output continued to increase regardless of its will.

"Death Drive"

A beam without penetration power that blows the opponent far away.

"Hellblaze Omega"

Unleashes a massive "Hellblaze."

Voice - Masahide Fujima

Combat Class: 173,000 (when power is released)

A stout old man with a staff. One half of the "First Demon." A top-tier demon clan member with combat power surpassing the Ten Commandments, and Meliodas's master. Known as the "Pacifier Fiend" for his relentless fighting style that devours the enemy to the bone.

His true identity is the "First Demon" split into two by the Demon King. During the battle for Camelot, he merged with his other half, Cusack, to revive in his original form. After splitting again, he attempted to collect the Commandments to have Meliodas absorb them, but was killed by Cusack, who deemed him an obstacle to his own goals.

He adores Meliodas, calling him "Young Master," and harbors excessive hostility towards Elizabeth, believing she has deceived him. He demonstrates various techniques, such as summoning the "True Night" to nullify Escanor's magic power and mastering the Full Counter taught by Meliodas. When enraged, he reverts to a younger, muscular, and sinister form, showcasing unmatched prowess in close combat.

Magic Power "Punishment"

"Full Counter"

A magic power that reflects magic directed at him with more than double the power. The same magic power as Meliodas.

"Darkness"

Unleashes darkness to turn the surrounding area into night. Successfully nullified Escanor's Grace "Sunshine," but was ineffective against Mael, the original holder of the Grace.

"Microscopic"

Reduces the target's height.

"Meteorworks"

Rains down numerous fireballs from the sky.

"Absolute Order"

"Dragon Claw"

"Crimson Requiem"

"Grudge Blade"

Unleashes a blade of magic power.

"Absolute Cancel"

Forcibly cancels effects caused by magic power.

Voice - Jouji Nakata

Combat Class: 168,000 (when power is released)

A man characterized by two long, straight beards. One half of the "First Demon." Zeldris's master.

A master swordsman who taught swordsmanship to Zeldris. Known as the "Reaper of Slumber." Possesses the power to control others at will by making eye contact, and when serious, transforms into a sinister form with wings on his back, similar to Chandler. Acts as Zeldris's butler, but his tea is terrible. When his prized beard is cut or Zeldris is in danger, he shows a common trait with Chandler, discarding his usual calm demeanor. After splitting again, he plotted to make Zeldris the Demon King, killing Chandler, who was a barrier, and having Zeldris absorb the Commandments. However, his actions, driven by concern for his disciple, resulted in his disciple's body becoming the new vessel for the Demon King, and he was obliterated by the Demon King before learning the truth.

Magic Power "Resonant"

Causes those who receive his magic power through eye contact to mimic his actions. Can be activated remotely to some extent, as demonstrated when he used it on Arthur, brought back by Merlin, to make him commit suicide with Excalibur.