I noticed a bit of fan speculation surrounding a certain pokemon that some have referred to as "The Cthulhu Pokemon"
No idea if this is what the designers were going for or not, but the theories I've seen floating around are that this guy's first from is the 665 Pokemon. So, if that would make this guy the next on the list as 666. Also, he's a squid-like Pokemon and Cthulhu is always shown with tentacles. If they actually did make a Pokemon based off of Cthulhu I honestly wouldn't be that surprised what with how Cubone wears the skull of its dead mother or how that one balloon Pokemon kidnaps children and takes them to the land of the dead.
Or how Yamask is a dead human soul whose make represents the face it once had.
So anyways here's what the possible Cthulhu inspired Pokemon looks like. Its both a Dark and Psychic type and its name is Malamar:
Again I'm not sure if this is legit or not or if its just fan speculation.
If you want to lean more there's a tiny bit of info here:http://bulbapedia.bulbagarden.net/wiki/ ... k%C3%A9mon