Grelius

Grelius is an NPC and guard to Queen Nyx, who primarily guards the  Throne Room with Krevius. They also briefly appear in other places on the  Crimson Isle, twice during the Mage Faction Questline and once at the end of both Faction Questlines.

Quests

Grelius prevents the player from entering the  Throne Room until you present a Letter of Recommendation during the Mage Faction Questline.

Later in this questline, they appear with Krevius and Captain Ahone in the  Burning Desert when you call Captain Ahone about the Apprentice. They also appear with the two in the  Mage Council when discussing stolen Sulphur.

At the end of both Faction quests, they appear in the  Forgotten Skull with Krevius, Captain Ahone, Elle, Ugo, and two Piglin Guards.

Condition	Dialogue
With a Letter of Recommendation	[NPC] Krevius: WHY ARE YOU HERE? [NPC] Grelius: WHY ARE YOU HERE? Select an option: [I'm here to cause trouble, of course] [I have a letter of recommendation]
Selecting [I have a letter of recommendation]	[NPC] Krevius: FINE, YOU MAY PASS! [NPC] Grelius: FINE, YOU MAY PASS!
Condition	Random Dialogue
None	[NPC] Krevius: DO YOU WANT TO BE PULVERIZED? [NPC] Grelius: DO YOU WANT TO BE PULVERIZED?
	[NPC] Krevius: WHAT DO YOU WANT? [NPC] Grelius: WHAT DO YOU WANT?
	[NPC] Krevius: WE HAVE OUR EYES ON YOU. [NPC] Grelius: WE HAVE OUR EYES ON YOU.

If the player selects the [I'm here to cause trouble, of course] option, they will be killed, with the death message: ☠ You got pulverised by Krevius and Grelius.