Luffy is a versatile fighter with his Gomu Gomu no Mi, given his rubber properties and Gear Fourth applications. Luffy has successfully acquired another Devil Fruit awakening, his fifth gear, a Mythical Zoan type
Kaido, one of the four emperors of the sea, possesses all three forms of Haki, and his advanced Conqueror's Haki increases his brutal strength. He is a Mythical Zoan type which means Kaido can transform into a huge azure dragon.
Despite not being a devil fruit user, Silver Rayleigh is known for his immense strength. He is one of the key figures who trained Monkey D Luffy after the assassination of his brother, Ace. Rayleigh formerly served as the first mate of the legendary Roger Pirates.
Sakazuki known by his admiral alias Akainu, is the current fleet admiral of the Marines, succeeding the previous fleet admiral, Sengoku. Akainu possess powers to turn anything into Magma owing to have eaten the Magma Magma Devil fruit.
Edward Newgate aka Whitebeard, the former emperor of the sea had the ability to destroy the entire world. Whitebeard could create powerful shock waves by shattering the air like glass owing to his Tremor Tremor fruit ability.
Shanks is the only Younkou who doesn't possess any Devil Fruit power. He is a master swordsman who wields Gryphon. The Sea Emperor can defeat sea monsters with just his fierce look.
Garp, the grandfather of Luffy and Vice-Admiral of the Navy is renowned as the Hero of the Marines. Popularly known as 'Garp the Fist', he possesses monstrous punching power that can even shatter mountains.
The current strongest swordsman in the world, Dracule Mihawk, is known for his exceptional eyesight and can strike with extreme precision. Referred to as 'Hawk Eye' he has the ability to release a long-range slash that can even demolish a massive ship.
Roronoa Zoro, a member of the Straw Hat Pirates, is another master swordsman known for his Oni Giri signature technique. It is a three-way simultaneous slashing attack that demolishes enemies.
Marshall D Teach aka Blackbeard is the only pirate who wields the power of two deadly devil fruits which makes him one of the strongest characters in One Piece.
TOP 10 STRONGEST CHARACTERS IN "One Piece"