Luffy is a superman with "rubber fruit" ability. His whole body is rubber, including internal organs and blood vessels. He can expand and contract at will. He is not afraid of bullets, but of sharp weapons such as swords. Besides, his body is not conductive, and lightning moves are ineffective for him.

Second gear jet gas

Rubber man's unique moves, using his feet as a pump, pumping up the air in his legs to speed up the flow of blood vessels, steam will come out of his body and his skin will turn red, just like using stimulants. Ordinary people will die with this trick. Luffy can bear it, but it can't be used for too long, otherwise it will be dangerous. It can launch aerial bombs and attack the enemy from a distance, and the speed can be increased several times.

Three-bone balloon giant

By biting your fingers, blowing air into your body, and then gathering the bones of your whole body in a certain part of your body (usually your fists and feet), it becomes huge. The side effect is that it will be humanized after the battle. With the destructive power of terror beyond giants, hitting the enemy can almost kill him with one blow. Hard bones can easily bounce off bullets and make chopping ineffective, but the attack speed is slow and the strength can be enhanced several times.