Kaido

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

Personality
Kaido is merciless pitiless and craves excitement. He's even willing to start a war simply to satiate his boredom. He never misses an opportunity to gain the advantage as he attempted to attack whitebeard during his journey to save ace but was intercepted by shanks,He's also a heavy drinker and his temperament can be affected by the enormous amount of booze he chugs down his gullet, one minute he can be a real crybaby, then the next minute he can be a raging drunk willing to attack even his own men. He thinks highly of himself and has a low opinion of the worst generation, thinking them little more than rookies playing "little pirate games". He even sees Donquixote Doflamingo, a Warlord of the Sea who's very powerful in his own right, as weak. As pitiless as he might be kaido still has a sense of honor, as when he faced big mom in combat he ordered his men to remove her sea stone handcuffs first.

Quotes
I'll tear out your heart!

The land of wano belongs to me!

Worororo!

Fighting Style
Kaido possesses extreme physical strength, earning the title of the "strongest creature in the world". He wields a large spiked club called a kanabō, and is very proficient with it. His body is extremely resilient, and boasts night indestructible durability. 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 as yet unnamed Zoan-class Devil Fruit that allows him to transform into a large blue eastern dragon. In this form, he is able to travel freely through the air by creating clouds and using them as footholds. He can also shoot destructive fire blasts from his mouth.