One Piece Theory: Kaido has Mythical Zoan: Typhon

Update: Check also out my speculation of "Have We Seen Kaido Already?"
Eiichiro Oda really likes to use mythology general themes in One Piece, so this theory is about Kaido, but first couple of points:

(Picture credits)
-Law said that Kaido is the strongest creature in the world
This would imply that Kaidou isn't even human, but it may as well be a trick by Oda to make fans speculate about what Kaido really is. Of course it's possible that Kaido himself isn't anything that he's pictured out to be in people's minds, only time will tell.

-Kaido is called "Hundred beast Kaido" and / or "Kaido the beast"
I can't say for sure whether this is because of mistranslation or whether Oda meant to give us these two descriptions of Kaido. Of course there is meaning in example we've known of "BIG mam" for many years now and we got to see her right after Fishman island arc and she was seriously big. This is a indication that Kaido is some kind of beast that is so important factor in his essence that it has became a nickname.

The "Hundred beast" proportion could also relate to the SMILE aspect of Kaido making hundreds of his underlings to artificial Zoans.

So, on to the theory part of this text

Kaido could easily have a Mythical Zoan: Typhon
(Or Typhoeus, Typhaon, Typhos)

Typhon was the most deadly monster of Greek mythology, which would be in line with the saying of "The strongest creature of the world". Wikipedia describes Typhon as having hundred dragon heads (which would also be in line with the "hundred beast"!) His bottom half was gigantic viper coils and his whole body was covered in wings.

Of course Oda's version of Typhon could be something entirely else, but it would pose as a great "base" for his design of Kaido.

In the wikipedia article of Typhon there's also talk about offspring of typhon, which would be linked to the underlings of Kaido, whom he's making artificial Zoans. Typhon's offspring includes Orthrus, Sphinx, Nemean Lion, Cerberus, Ladon, Lernean Hydra and Chimera. We could easily see that some of these or all of these belong to the crew of Kaido if Oda decides to follow this route.