Dagon is a Lovecraftian-like demonic entity from the fictional universe of the Pathfinder paper-and-pencil roleplaying game by Paizo inc.
Dagon (aka, Shadow Lord of the Sea, Demon Lord of the Sea) is a Qlippoth Lord who was originally a mindless sea monster. As it consumed more demons, it gained an intellect. He resides in the sunken city of Ugothanok, with its alien architecture. It's form is a foul hybrid of octopus, eel, and fish with four tentacles, a monstrous face, and the lower body of an eel. It measures 35 ft and its spawn usually take its form