Shanks is another one of the Yonko. He is considered one of the strongest pirates and is feared throughout the world. Shanks, unlike other strong pirates and Admirals, doesn’t have any devil fruit abilities. He has made a name for himself in the pirate world solely with his powerful Haki. He, in my opinion, will be an advanced user of Conqueror’s Haki. He is easily on or above Admiral level, and we will soon see him in action.
3. Big Mom
Big Mom is easily one of the strongest ever characters in One Piece. She is also a Yonko and is huge in size. She has the devil fruit ability of Soru Soru no Mi fruit. It grants her the ability to take away the soul and lifespan of anyone and then with these taken souls she can give life to anything whether living things like plants or any non-living thing. But this ability of her is useless against those who do not fear her. Also, she is an extremely good user of the various type of Haki. She can defeat all Admirals in my opinion, and maybe even take on multiple Admirals at once.