Kostchtchie, The Prince of Wrath (Patreon)

Kostchtchie’s wrath and hate are legendary in the Abyss. He has no allies among the other demon  lords but is allowed to rule his realm on the 23rd layer of the Abyss with little interference as a  result of his ruinous temper. This realm is utterly and completely under his command, yet  Kostchtchie remains unsatisfied with its power. His giants conquer and claim a distant mountains in  his name, yet from that mountain’s peak the Prince of Wrath can always see one more mountain  farther out that remains unclaimed.

Art from Pathfinder 1st Edition