Marrake al-Sidan al-Hariq ben Lazen

 was the Grand Sultan of the City of Brass. The Grand Sultan has been mentioned but has not appeared on Critical Role.

While traveling through the streets of the City of Brass with Vox Machina, Senokir pointed out a part of the city called "the Furnace" where the Sultan resided in the Charcoal Palace.

When Vox Machina murdered Ghurrix, the Nine Hells' ambassador to the City of Brass, a member of the Illuminated arrived and attempted to arrest the party in the name of the Sultan, but Scanlan Shorthalt temporarily halted the efreeti guard's attack by claiming that Ghurrix was planning to assassinate the Sultan. Grog clumsily spoiled the deception as Illuminated reinforcements were about to arrive, so Scanlan used modify memory to make the guard "remember" a different version of events: the guard had heard Ghurrix plotting to assassinate the Sultan and had bravely joined with Vox Machina to defeat the ambassador.