Kaido of the Beasts is the Governor-General of the Beast Pirates and currently ranked amongst the four most powerful pirates in the seas, the Yonko.
Originally beginning his life as a pirate as an apprentice aboard the crew of Rocks D. Xebec, a man greatly feared and highly regarded as one of the greatest threats to the stability of the world and the man who led an era before the arrival of the future Pirate King Gol D. Roger. Alongside Kaido on the crew where his fellow future Yonko, Edward Newgate a.k.a. Whitebeard and Charlotte Linlin a.k.a. Big Mom, whom at some point Kaido would become indebted to.
Eventually the Rocks pirates would become to big a threat, and in order to put a stop to them an unnatural alliance was formed by the Roger pirates and the Marines. Spearheaded by Gol D. Roger and Monkey D. Garp, the two forces would clash on the island of God Valley, resulting in the defeat and Disbandment of the Rocks pirates.
Throughout his life as a pirate, Kaido suffered many defeats and was captured numerous times, by both his enemies and the Marines, but no matter what method they used in an attempt to execute him, they all failed. Eventually he would rise through the ranks of the pirate world and become an emperor of the sea.
Utilizing his newfound power and Status, Kaido would use his influence over the land of Wano, an isolated nation of samurai. Entering an alliance with the Shogun Kurozumi Orochi whom had gained the rank through lies and deceit. During this time Kaido and his crew would defeat and kill all of Gecko Morias crew except for the captain. Kaido Would aslso come to face off against Kozuki Oden whom by birthright was the true Shogun of Wano. The Beast Pirates alongside allies of the Shogun would battle against Oden and his retainers. In the resulting battle Kaido would be wounded at the hands of Oden, though through deceit Kaido would defeat Oden and his rebellion and send him to be executed by boiling.
At some point Kaido would come in possession of one of the 4 road Poneglyphs and would enter into an alliance with the Shichibukai Donquixote Doflamingo and the scientist Caesar Clown in order to mass produce artificial devil fruits that would create an army of artificial zoans.
Years later during the the series main timeline, one of the biggest wars of the current era was set to take place, as in order to rescue Portgas D Ace whom had been defeated and captured by Blackbeard, and set for execution at the hands of the marines, Whitebeard and his crew would seek to rescue Ace. Kaido would seek to use this opportunity to attack his fellow emperor, only to be intercepted by another emperor Red-Haired Shanks. What happened during their confrontation was unknown, though Shanks himself would arrive at Marineford unscathed.
During the period of the 2 year timeskip, Kaido would be challenged by the Supernova X Drake. What transpired during these events was unknown though Drake would become a part of Kaido's crew as a headliner. Secretly however Drake was actually still a marine working undercover as part of a specialized unit SWORD in which he was its leader.
Kaido would make his first real appearance in the series during the ending of the Dressrosa arc, in where he is seen located on Balloon Terminal, a sky island 10,000 meters up. There he is spotted by one of the Supernovas, Urouge. The reason for him being there was to seek the ending of his own life, an act he had attempted many times but failed. So Kaido threw himself from the incredible height, only to have his attempt to once again fail. The island in which Kaido would fall upon was one being used by the alliance of another 3 Supernovas, Eustass Kid, Scratchmen Apoo and Basil Hawkins. Emerging from a large pit of his own creation, Kaido lambasted Whitebeard for dying and screamed out for Doflamingo to hurry up, so Kaido could begin a large war. Both Scratchmen Apoo and Hawkins would surrender, with only Kid refusing to join, resulting in Kaido beating the super rookie and imprisoning him in order to break his spirit.
Powers and abilities
As one of the Yonko, Kaido is one of the four most powerful pirates alive. He currently has a bounty of 4,611,100,000 beri, which surpasses any pirate currently alive, with the exceptions of the late Whitebeard and Gol D. Roger.
As the strongest beast in the world, Kaido has phenomenal level of superhuman physical abilities.
Kaido possesses nigh-invulnerability to harm, even without using Busoshoku Haki. This level of durability gave Kaido the reputation of being unable to die.
Kaido ate an unnamed Mythical Zoan-type Devil Fruit that allows him to transform into a massive, blue-scaled Eastern dragon. In this form, he is able to move through the air by creating clouds and using them as footholds. He can also release devastating blasts of fire and heat from his mouth, which easily blew apart the ruins of Oden Castle, and destroyed and scorched surrounding terrain.
Kaido is one of the very few people in the world capable of using all three types of Haki.