What so you are not going to volunteer yourself to be measured as you die victim of a free-fall?
I said unbelievable, not indescribable, he does and subsequent authors try to describe lord Cthulhu as a giant with some kind of octopus for head, but his presence in the world induces madness on people all around the globe, that means his sole presence, you don't have to see him, he just has to interact with the world, that happened after he awakened for a brief time, and is that short event which settles the ground for a bunch of other future bizarre occurrences in the lovecraftian universe.
Doomroar
Well RIP in pepperonis m8.
He is the father of modern horror, so is your lost if you want to ignore him, his characters are beings that transcendent human acknowledgement, meaning they can't be described, so by principle any attempt is doomed to end in failure, his genius is to create what is to become Lovecraftian storytelling, in which humanity is portrayed as helpless upon the greatness of the universe and its other inhabitants, with the most notorious being lord Cthulhu, a being so unbelievable, that for the brief moment his avatar was awake on the surface of the sea, the world at large went mad, that's cool as fuck!
Cyberdevil
A piece of pizza. All metaphorical I hope!
Looks like the fans are trying though, he kinda looks like.... Davy Jones from POTC. Though a little bigger. Does sound pretty awesome!