Dhat-Gnthazhu is a massive annelid worm, 10 million miles long and 500,000 miles in diameter. Its flesh is grey and metallic. Its maw, filled with teeth the size of mountains, can swallow planets. A massive fin the size of several moons runs down its neck near its head. It is pocked with craters. Stars have scored its flesh with long burns. Nebulae have left dust in its mucuous, and blackholes have ripped its fin in places.

It devours worlds. Morags and hexars spew from its mouth after it destroys solar systems. Its followers gain the power of rending, for the brief periods they exist. It represents the end of the universe in total devastation and apocalypse.

Its Name is unknown to all save the hexars it spawns. Those few who know of it translate the name "Devouring Worm" into their language to refer to it.

During the last War of the Gods, Dhat-Gnthazhu battled the mafi girma briefly and was repelled from Shem. None know what parts of deep space it now lurks in.