Tyrant

An emperor made of several imperials who died in the Blacksand Annex, sinking deep into the clay before converging and resurfacing as a great undead beast, still burning with the fires it rose from. After burning its way across the land, the Tyrant was eventually lured out over the Sea of a Thousand Currents, where it was dragged under the water. The Tyrant was eventually contained deep underground, chained and immobilized within the cold waters of the flooded caves far beneath the Penumbra Sepulchre. Despite the Tyrant's inextinguishable flames being smothered, the extreme heat from the Tyrant is still such that it has superheated the water it is suspended within, to the point that it even permeates into the Sepulchre far above it.