Kraken

Deluge was were not always so bereft of solid land. Rather; the great civilization of Riileth; ruled by its monstrous demon-god-king – almighty Kraken. Sunk eons ago; Riileth and Kraken slumbers in the Undersea. Worshipped in secret on land, but openly by Drow, Mind Flayers, and other monsters the priesthood of Kraken seeks to raise their god from his tomb; raising Riileth and creating a world where all morality and good is thrown aside. On such a world all dark things would be liberated, free to kill and revel in their natures. It is thought that many depictions of octopus-headed humanoids are related to the Kraken.

The Kraken is counted amongst the aberrant gods.

Kraken

Strange Sails nikodemus