Yeb
From Marillia
Yeb is an entity described in the Cthulhu Mythos as a Great Old One.
There is much mystery surrounding Yeb and her twin, Nug. Some say they are conjoined twins born of the unholy union of Yog-Sothoth and Shub-Niggurath, while others instead claim they were born when the Outer God Cxaxukluth split himself in half into male and female: Nug and Yeb.
Some believe Yeb to be the progenitor of Tsathoggua.