I am planning a campaign arc where the antagonists are followers of the entity known as Cthulhu from H.P Lovecraft's strange tales. In the end of the campaign I'd like to have the adventurers fight Cthulhu or at least an aspect of cthulhu and I am wondering if there is anything published (official or otherwise) with a stat block inspired by the original Cthulhu for d20 system or am I just better off making my own?
The following descriptions are from Wikipedia here is the link.
The original Cthulhu is described as "A monster of vaguely anthropoid outline, but with an octopus-like head whose face was a mass of feelers, a scaly, rubbery-looking body, prodigious claws on hind and fore feet, and long, narrow wings behind."
Cthulhu has been described as a mix between a giant human, an octopus and a dragon, and is depicted as being hundreds of meters tall, with human-looking arms and legs and a pair of rudimentary wings on its back.