Luffy's current peak power is Gear 5, his awakened devil fruit form enhancing his abilities significantly. Gear 6 is unlikely to exist, as Luffy has stated Gear 5 is his pinnacle devil fruit form.
By awakening the powers of his Devil Fruit, Luffy is now able to harness the powers of the sun god, Nika, and become the Warrior of Liberation. While in his Gear 5 state, Luffy is able to take on ...
Some transformations, like Nightmare Luffy and Gear 4 Bounce Man, stand out for their menacing and powerful appearances. Luffy's Gear 5 design, introduced in his battle against Kaido, is visually ...
In particular, due to Kurama and the Six Paths Sage Mode ... keep him from being knocked out too quickly, Luffy is the winner here due to his Gear 5 essentially making physical attacks useless.