Fictional crabs

main character in SpongeBob SquarePants

Mi-Go are a fictional race of extraterrestrials created by H. P. Lovecraft and used by others in the Cthulhu Mythos setting. The aliens are fungus-based lifeforms which are extremely varied due to their prodigious surgical, biological, chemical, and mechanical skill. The variants witnessed by the protagonist of "The Whisperer in Darkness" resemble winged human-sized crabs.

Aesop's fable