List of Great Old Ones

This is a compendium of the lesser known Great Old Ones of the Cthulhu Mythos of H. P. Lovecraft.

Bokrug (The Great Water Lizard) first appeared in Lovecraft's short story "The Doom That Came to Sarnath" (1920). The being is also part of Lovecraft's Dream Cycle.

Bokrug is the god of the semi-amphibian Thuum'ha of Ib, in the land of Mnar. The deity slept beneath the calm waters of a lake which bordered both Ib and the city of Sarnath. When the humans of Sarnath cruelly slaughtered the populace of Ib and stole the god's idol, the deity was awakened. Each year thereafter, strange ripples disturbed the otherwise placid lake. On the one-thousandth anniversary of Ib's destruction, Bokrug rose up and destroyed Sarnath (so utterly that not even ruins remained). Afterwards, the Thuum'ha recolonized Ib and henceforth lived undisturbed.

Some were the figures of well-known myth — gorgons, chimaeras, dragons, cyclops, and all their shuddersome congeners. Others were drawn from darker and more furtively whispered cycles of subterranean legend — black, formless Tsathoggua, many-tentacled Cthulhu, proboscidian Chaugnar Faugn, and other rumoured blasphemies from forbidden books like the Necronomicon, the Book of Eibon, or the Unaussprechlichen Kulten of von Junzt.
—H. P. Lovecraft, "The Horror in the Museum" (emphasis added)

...
Wikipedia