In "One Piece", the last seen Yonko or Emperors of the sea was Kaido of the beast. He is an abnormally large and pure muscle man that has a hair that resembles a mane, thick horns that curved forward on each side, fu-manchu mustache, spiky goatee and a tattoo that resemble a reptilian scales.
He was first seen attempting suicide after the defeat of Donquixote Doflamingo at the Hands of Monkey D luffy. Kaido is a Yonko or Emperor of the sea in the "One Piece" world, meaning he is one of the four powerful pirates that reside in the "New World".
He is also known as the "Strongest Creature in the world" with a same like epithet with former Yonko or Emperor of the sea, Whitebeard as the "Strongest Man in the world". Everyone will notice that in his epithet, he was called a creature instead of a human and this could mean that the name "creature" is related to his power.
In Punk Hazard arc, Caesar clown a scientist in "One Piece", is creating and supplying artificial Zoan devil fruit, a devil fruit that will grant creatures or animal powers to Kaido. It was stopped when the Straw Hat Pirates destroy his lab. And when the crew of Kaido invaded Zou, All of his crews has a animal like power.
One of the calamities of Kaido which is Jack, has the power to become a Mammoth. So if Kaido is the Strongest "Creature" in "One Piece", meaning he has an animal power. It could be that because his has resembles a Mane, he could be a Lion.
He has Horns and that could mean that he can become a bull. A reptilian scales that resembles the scale of a crocodile. He can become one of the animals or he could have the power of those three animals or the only one with many Zoan powers in "One Piece".
But there is a theory in "One Piece" that he can be a dragon as well. The first time Kaido was shown was in a Sky Island called Ballon Terminal, where he is going to commit suicide by jumping. How did Kaido ended up there without his crew? This could mean if he can become a dragon then he can fly, that's why he is in Sky Island.
And it was told that he was immortal or unable to die. In "One Piece" he has been captured and tortured 18 times, he was executed 40 times, but he mysteriously survive all of it. Even attempting suicide becomes a hobby for him.
Some legends about the dragons are known for being immortal or being mortal that had a thick, unpierceable skin that makes them almost invulnerable. This could also be a reference and a possibility of Kaido's power in "One Piece." He could also be an Oni, a demon, devil, ogre or troll in Japanese folklore.
The reason he could be an Oni is because of his hair, horns and the Kaido's weapon, Kanabo, a iron club that has spikes. Oni also use Kanabo or Iron club as a weapon. The Straw hat pirates will battle Kaido in the future and fans can't wait for this moment in "One Piece."
A battle between the Straw Hats and one of the strongest pirate crew will be one of the greatest battle in "One Piece." Everyone should just wait for weekly new chapter and episode for more updates as this will give us more answers in regards with the power of the Yonko Kaido.
