Thread:Undoniel/@comment-25192437-20180730153426/@comment-25192437-20191014194020

Ann'var is an extradimensional entity that was trying to conquer the multiverse (and is not, as its page's universe designation implies, from Earth-20051), had a bunch of tentacles and mouths with way too many teeth, possessed a variety of physics-breaking and metaphysical powers, can reform even if its physical manifestation is destroyed, and its name has an ' in it - all of which are fairly common traits of Great Old Ones.

It's listed in the "Cthulhu Mythos Pastiches" category, though.