Ythogtha is a Great Old One in the expanded Cthulhu Mythos. The character was created by Lin Carter for his Xothic Legend Cycle.
Description
Ythogtha is the second son of Cthulhu who resembles a gigantic, humanoid frog or Deep One, with but a single, huge eye in the center of his forehead like a cyclops. A dense mane and a beard of writhing tentacles grows from his head. Ythogtha is incredibly large; when the sorcerer-priest Zanthu attempts to free Ythogtha from his prison, he mistakes his god's clawed, slimy fingertips for mountainous heads. The Elder Gods imprisoned Ythogtha in the Abyss of Yhe. He is served by the planarian-like yuggs and their lord, Ubb, The Father of Worms.
Gallery
Ryuga Boumera's interpretation of Ythogtha.
MrMeowser's drawing of Ythogtha
Bornulhu's interpretation of Ythogtha