is a powerful transformation technique used by Monkey D. Luffy in the anime and manga series One Piece . It first debuted in Chapter 784 of the manga and Episode 726 of the anime during Luffy's climactic battle against Donquixote Doflamingo.
When Luffy faced Charlotte Katakuri, raw power wasn't enough. He needed speed, and he needed unpredictability. Enter .
By using Haki to maintain his body's shape despite the internal air pressure, he turns his rubber body into a highly compressed, spring-like weapon. gear fourth one piece
, first revealed during his battle against Donquixote Doflamingo in the Dressrosa Arc. It works by Luffy coating his limbs in Armament Haki and blowing a massive amount of air into his muscle structure, rather than his bones, to increase his tension and elasticity. One Piece Wiki +3 The Three Forms of Gear Fourth Luffy can adapt Gear Fourth into different variations depending on the combat situation: Boundman (Bounce-Man)
Revealed during the fight with Charlotte Katakuri , this form prioritizes speed over raw power. It allows Luffy to use "Python" attacks, where his punches change direction mid-air and accelerate the longer they stretch, making them almost impossible to dodge. Strategic Costs and Evolution Gomu Gomu no Mi/Gear 4 Techniques | One Piece Wiki | Fandom is a powerful transformation technique used by Monkey D
To understand Gear Fourth, you have to look at its predecessors. utilized Luffy’s rubber body to pump blood faster, acting like a hydraulic pump for speed. Gear Third involved inflating his bones to create giant limbs for massive destructive power.
Unlike the bulky Boundman, Snakeman sees Luffy take on a leaner, more aerodynamic shape. This form sacrifices a degree of defense for blinding speed. The defining trait of Snakeman is the technique. When Luffy faced Charlotte Katakuri, raw power wasn't enough
The default and most balanced form. It provides immense physical power and the ability to "fly" by kicking the air at high speeds.
Boundman’s fighting style is unpredictable. He bounces off the floor, walls, and air, making him difficult to target. It is a form designed for all-out assault, overwhelming enemies with raw power and speed simultaneously.