Cthulhu
Cthulhu is a fictional giant creature, one of the Great Old Ones in H. P. Lovecraft's Cthulhu Mythos. It is often cited for the extreme descriptions given of its appearance, size, and the abject terror that it invokes. Cthulhu is often referred to in science fiction and fantasy circles as a tongue-in-cheek shorthand for extreme horror or evil. It also has been depicted in a parody of the Ichthys.
Read more about this topic: Parodies Of The Ichthys Symbol