Kaido

Kaido (カイドウ), The King of the Beasts, is one of the Four Emperors. He has his own pirate crew called the Beasts Pirates, and he is its Supreme Commander. He and his crew currently occupy the Land of Wano in alliance with its Shogun, Kurozumi Orochi.

Fighting Style
Kaido possesses extreme physical strength, earning the title of the "strongest creature in the world". He wields a spiked club called a kanabō, and is very proficient with it. The World Government has attempted to execute him 40 times, failing every single time because whatever weapon/tool they used on him would not work against his body.

Kaido ate an unnamed Zoan-class Devil Fruit that allows him to transform into a large eastern dragon. In this form, he is able to travel through the air by creating clouds and using them as footholds. He can also shoot destructive fire blasts from his mouth.