Night Sentinels

The Night Sentinels were order of holy knights that protected the City of Argent and once stood against the armies of Hell in the realm of Argent D'Nur eons ago. They were the guardians of the Wraiths and acted as both their holy servants and a bridle for their awesome power.

The Night Sentinels were imbued with Wraith energy and proved fierce opponents of the Hell's legions, and according to the Ungmar Codex almost triumphed over Hell, but were betrayed by a member of their order. The unnamed Betrayer struck a bargain with a lowly Hell priest, Daeg Grav, for the return of his son he led the priest and his cabal to the source of the Night Sentinels' power, the Elemental Wraiths. Daeg Grav cursed the wraiths while they slept, and the Hell priests stole their energy for their own devices. Argent D'Nur was defeated, and their realm absorbed by Hell, along with the Argent energy that led to the creation of the Well.

The Night Sentinels' armor design bears some resemblance to the Praetor Suit, although their helmets resemble a crusader's great helm of the High Middle Ages. The Sentinels are somehow connected to the Doom Slayer, as their souls often act as his guide during his journey through hell. While little is known for certain about the Night Sentinels, some have speculated that the Doom Slayer was originally a member or perhaps leader of the order and is now the last of their kind. Others have suggested that they guide the Doom Slayer out of either respect for releasing the Wraith's souls, or out of having a mutual enemy in Hell's legions. Either way, the souls of the Night Sentinels appear to the Doom Slayer at various points throughout Hell to point the way or stand in solidarity with him.