He has a cone-shaped body, a razor-fanged reptilian head like that of a Tyrannosaurus rex, four broad, flat, starfish-like arms with suckers, and a head of tentacles. How he swims or walks on the ocean floor is unknown, but it is possible that he has a slug-like foot similar to that of the Great Race of Yith. Zoth-Ommog was imprisoned by the Elder Gods beneath the seabed near Ponape and R'lyeh. Like his older brother Ythogtha, Zoth-Ommog is served by Father Ubb and the yuggs. Zoth-Ommog's legend is chronicled in the R'lyeh Text and the Ponape Scripture.