Powers & Abilities - Green bull proved what Kaido said about haki

One Piece Film: RED Spoiler Talk (FULL SUMMARY) – The Library of Ohara

Greenbull Apreciation Post : r/OnePiecePowerScaling

Hybrid Kaido vs Greenbull and Awakened Lucci - Battles - Comic Vine

In One Piece, does Seastone affect Devil Fruit users' ability to use Haki? Couldn't Luffy use Armament Haki to break the Seastone cuffs he is in during the Wano Arc? - Quora

Powers & Abilities - 7 signs of Vergo possessing conquerors haki

How much stronger is Admiral Green Bull than King or Queen? - Quora

Luffy and Kaido are stronger than anybody currently alive : r/OnePiecePowerScaling

Powers & Abilities - Kaido statement about haki

Aramaki, One Piece Wiki

Sengoku- SWORD by Nectp on DeviantArt