Whether you're a seasoned fan or a newcomer to the world of One Piece, 4th Gear is an unforgettable and thrilling aspect of the series that is sure to leave you on the edge of your seat. As the story continues to unfold, it will be exciting to see how Luffy continues to evolve and utilize his 4th Gear abilities to take on the challenges that lie ahead.
Ryzen Edit Show all Form Primary Focus Key Features Boundman (Bounceman) Balanced Power The default form; grants immense striking power and the ability to "fly" by kicking the air. Tankman Defense Used against Charlotte Cracker; an immobile, massive form that absorbs attacks and fires enemies back. Snakeman Speed & Agility A slimmer form used against Katakuri; focused on rapid-fire, unpredictable attacks that accelerate the longer they stretch. Limitations and Risks Despite its power, Gear 4 is a "double-edged sword" with significant drawbacks: Reddit Haki Depletion one piece 4th gear
"Imagine blowing so much air into your muscles that you become a giant, bouncing, Haki-infused demolition ball. That's Luffy's Fourth Gear—and it changed One Piece forever." Whether you're a seasoned fan or a newcomer
Boundman (Tension Man)This is the default version of Gear 4th. It focuses on a balance of defense, flight, and explosive power. In this form, Luffy’s physique becomes top-heavy and incredibly springy. He cannot stand still and must constantly bounce. His signature move, the Gomu Gomu no Kong Gun, compresses his fist into his forearm like a spring before releasing it with devastating force. Tankman Defense Used against Charlotte Cracker; an immobile,
💡 The idea for Gear Fourth came from Luffy’s childhood fights with animals on Rusukaina. He needed a form that could bounce back attacks from giant beasts while delivering knockout blows.
is the culmination of the time-skip training on Rusukaina Island. It combines the inflation mechanics of Gear Third with the speed of Gear Second, while introducing Busoshoku Haki (Armament Haki) as a structural framework. This creates a form that is both armored and highly elastic, solving the issue of Luffy's vulnerability to cutting attacks and lack of offensive impact against Haki users.