Infernal Revenant

An Ethereal that returned from the Cinderglow Lake.
Once a Dead End Butcher defeated by the Overlord Pompey, it was cast into the Cinderglow Lake. Yet instead of being reduced to ash, its body became encased in crystals formed from the burning byproducts of Ether.
Within the flames, its outer shell melted away and reformed again, each time gathering new layers of crystal. After enduring an endless torment resembling the depths of hell, it emerged with an armor-like body and gained the ability to move freely through fire.
After a long wandering through a world that seemed to have forgotten it, the creature finally discovered a spatial fissure at the bottom of the fire lake and entered the Divine Maze, Papago Hollow.
But that place was nothing more than another hell.
It appears to have suffered a crushing defeat. Ever since, it has been driven by an unknown force, obsessively collecting the special Ether scattered throughout the labyrinth.
Yet it can no longer tell whether what lies within is salvation... or blasphemy.

In combat, the Infernal Revenant unleashes powerful attacks with its weapon. After taking a certain amount of DMG, it enters the "Infernal State." While in the "Infernal State," some attacks can only be blocked by successfully performing a Chain Parry. The Infernal Revenant also summons a rain of fire that continuously damages Agents. Shattering each flint grants an "Infernal Shield" and restores Energy. Shattering all three flints will end the rain of fire.
Infernal Revenant no longer possesses weaknesses or resistances in Operation Bagel gameplay.