: He actually first uses it off-screen in Chapter 401/Episode 287 to break down a massive steel door, but it is not fully seen until his fight with Lucci. How it Works
: Initially, after using Gear 3, Luffy would shrink into a miniature version of himself for a period of time equal to the time he spent in the form, leaving him vulnerable. when does luffy use gear 3
) without shrinking. One Piece Wiki +3 Major Battle Moments Opponent Arc Key Attack Rob Lucci Enies Lobby Gigant Pistol, Gigant Axe, Gigant Whip Gecko Moria Thriller Bark Gigant Jet Shell (combined with Gear 2) Magellan Impel Down Gigant Stamp Sengoku Marineford Gigant Fusen (to protect Ace) Kraken/Hody Fishman Island Elephant Gun, Elephant Gatling Kaido Wano Red Roc (combined with Gear 2 and Haki) For more details on these techniques, you can explore the One Piece Wiki’s Gear 3 page or the Crunchyroll guide to Luffy's Gears . Would you like a breakdown of the : He actually first uses it off-screen in
Luffy uses Gear 3 in combination with his shadows (from the "Nightmare Luffy" form) and later on his own to fight the giant zombie Oars. He uses "Gomu Gomu no Giant Rifle" to shatter Oars's spine, demonstrating that Gear 3 is effective against opponents of gigantic stature. One Piece Wiki +3 Major Battle Moments Opponent
Luffy first reveals Gear 3 during the , specifically in his fight against Rob Lucci of CP9.