청룡
, also known as , is the Supreme Commander of the Animal Kingdom Pirates. He is one of the Four Emperors, and also a former member of the Rocks Pirates. Kaido consumed the Fish-Fish Fruit, Azure Dragon Model which enables him to transform into an Azure Dragon or a Azure Dragon-human hybrid. He has been on the verge of being executed several times in the past, and has a fondness for attempting suicide, but he always ends up unscathed, being known in the world as . In the past, he faced Kozuki Oden, who was the only person capable of hurting him, leaving a scar on his chest. He was allied for years with Kurozumi Orochi to rule the Wano Country together, until Kaido betrayed Orochi, killing him, with the idea of turning his daughter Yamato into the country's new shogun.