King the Wildfire is an All-Star of the Beasts Pirates and one of Kaido’s three right-hand men, the Disasters.
King is a very tall man, appearing to stand taller than the very large Jack. He wears mostly dark clothes that completely cover his body, including a mask over his face and a spiked hat with goggles on it. He also has a pair of large dark wings on his back resembling angel wings.
Right now many people are assuming King is some kind of bird but the jet black wings and sword gave me a thought. Since he has a blade he will most likely fight Zoro. Zoro is known for using cursed bladed and demonic techniques like Asura.
Looking at King he may have eaten the Human Human Fruit: Mythical Model Devil. This would explains the wildfire title and wings.
Zoro makes it a perfect fight with the devil himself. In the bible Satan is a fallen angel and associated with Hell. In John 12:31 Jesus describes Satan as the ruler of the world which also could tie to the title of “King”. Additionally he likes torture which is synonymous with hell.
*Theory by Babyswagmonster