This artwork dynamically captures the power of the future King of the Pirates, Monkey D. Luffy. Here are some fascinating facts behind the character and the incredible attack shown:

• The Power of Haki: The black coloring on Luffy's giant fist isn't just for style. It represents Armament Haki (Busoshoku Haki). This is a powerful spiritual energy that acts like invisible armor, dramatically increasing the power of his attacks and allowing him to hit Devil Fruit users who would otherwise be intangible.
• Bone Balloon Technique: The massive size of Luffy's fist is a signature move from his Gear Third ability. He achieves this by biting his thumb and blowing a massive amount of air directly into his bones, inflating his limbs to gigantic proportions. The resulting attack, like the "Gum-Gum Elephant Gun," has colossal destructive power.
• The Treasure in the Hat: Luffy's simple straw hat is one of the most significant objects in the entire series. It was given to him by his idol, the Emperor "Red-Haired" Shanks, as a promise that Luffy would one day become a great pirate. Before Shanks, the hat belonged to the original King of the Pirates, Gol D. Roger, making it a symbol of the ultimate dream.
• A Power 25 Years in the Making (Major Manga Spoiler!): For over two decades, fans believed Luffy's power came from the "Gum-Gum Fruit." However, a recent major reveal in the manga unveiled its true identity: the Human-Human Fruit, Model: Nika. It's a Mythical Zoan-type fruit that grants the user the rubbery body and "ridiculous" powers of the legendary Sun God Nika, a warrior of liberation. This design captures the raw, awe-inspiring power that was hidden in plain sight all along.