Doflamingo’s smirk wavered for the first time. “What… is that?”

That episode—Episode 726, “Gear Fourth! The Bouncy Man”—marked the first time the world saw Luffy’s ultimate transformation. And Dressrosa would never be the same.

Because his body is under extreme internal air pressure while remaining rubbery, Luffy cannot stand still and must constantly bounce on the ground, which initially led Doflamingo to laugh at the form’s "ridiculous" appearance. Key Abilities and the Battle

Rebecca, watching from a crumbling tower, felt her heart stop. “What is he doing?”

three massive power systems simultaneously: Reddit Muscle Inflation (Kintaro): Luffy bites into his forearm and blows air directly into his muscular structure, increasing his size and tension. Haki Infusion: He coats his limbs and torso in a thick layer of Armament Haki. Unlike standard Haki, this allows him to maintain his rubbery elasticity even when "hardened," making him both a shield and a spring. Compression Power: Because his muscles are pressurized with air and held together by Haki, Luffy can retract his limbs into himself like a piston. This "compression" builds up extreme potential energy, which he releases for devastating attacks like the