One Piece Episode - 623

: The episode marks a pivotal mention of Kaidou's power. While the anime originally subtitled his title as "King of Beasts," fans often note that the Japanese "Hyaku-ju no Kaidou" more accurately translates to "Hundred Beast Kaidou," hinting at his massive army of Zoan-type Devil Fruit users.

: Law uses a Den Den Mushi to contact Doflamingo, demanding he resign from the Seven Warlords of the Sea (Shichibukai) to get Caesar Clown back. If he refuses, Law warns that the Emperor Kaidou—whom Doflamingo fears—will destroy him. One Piece Episode 623

: In the manga, Law specifically tells Luffy they have a 30% chance of defeating Kaidou. In the anime, this is softened to Law simply saying their chances are "very low". : The episode marks a pivotal mention of Kaidou's power