A number of supernatural characters appear in the Cthulhu Mythos. While many of these beings have godlike qualities, they do not fit the standard categories (that is, Outer God or Great Old One). Nonetheless, they are noteworthy for their infrequent or sometimes singular appearances in the mythos.
Magnum Innominandum means "Great Not-to-Be-Named" in Latin. It is also known as the Nameless Mist and N'yog-Sothep.
According to H. P. Lovecraft, this being is the spawn of Azathoth (making it on par with the Magnum Tenebrosum and Cxaxukluth) and is associated with, and possibly the progenitor of, Yog-Sothoth. It is also associated with Hastur. Little is known about this god, but it's considered to be extremely dangerous to sorcerers, hence its title "the unnameable" (archaic terminology, meaning not to be summoned or ritually named in an incantation).
Mlandoth and Mril Thorion were created by Walter C. DeBill Jr., but were suggested years earlier by Clark Ashton Smith. According to the cycle surrounding these beings, they are a sort of cosmic Yin and yang, whose meeting resulted in the creation of all things (although the terrible Azathoth is usually attributed to this). Their joinings routinely create and destroy matter and entities. One of the beings created in this way was the inimical Outer God Ngyr-Khorath.
Pharol is a powerful and dangerous demon that looks like "a black, fanged, cycloptic thing with arms like swaying serpents." The entity normally dwells in another dimension—a "seething and sub-dimensional chaos" beyond the mundane universe. The wizard Eibon of Hyperborea sometimes summoned Pharol to query him for arcane information.