Z'toggua is a Great Old One worshipped by the Deep Ones. He is described as obese humanoid bat with a gaping mouth on his belly and is explicitly not Zothaqquah nor Tsathoggua.
Trivia
- Z'toggua is referenced by name in the Thunder Lotus produced game Sundered when the player chooses to corrupt their double jump skill; the double jump is given a new name (Z'toggua's Wings) and new feature that morphs Eshe (the player character) into a bat-like creature