Article summary:
Behind his swim briefs and eccentric poses, Franky hides one of the greatest secrets in One Piece. He was the holder of the blueprints for Pluton, the most dangerous warship in history. Transformed into the ultimate cyborg thanks to Vegapunk's technologies on Egghead, he is now the crew's steel shield. In 2026, let's look back at the shipwright's crucial role.
Cutty Flam, better known as Franky, is more than a genius builder. He is the man who destroyed the World Government's only chance of recreating an Ancient Weapon. His dream? To build the dream ship capable of sailing every sea.
A heroic gesture to protect the world.
Why did he burn the blueprints for Pluton?
The blueprints for Pluton were secretly passed down among the finest shipwrights of Water 7, from Tom to Iceburg, and then to Franky. These blueprints served as a "countermeasure": if the real Pluton (hidden in Wano) were awakened by an enemy, a second ship would have to be built to stop it.
At Enies Lobby, Franky took a risky gamble. He bet on Luffy and his companions. Seeing that Nico Robin wanted to live and would not awaken the weapons for evil purposes, he burned the blueprints in front of CP9, thwarting the Government's plans.
Passionate about ships? Build your own fleet with our One Piece boat models, such as the Thousand Sunny.
Technological Evolution: From Scrap Metal to Vegapunk
Franky started out as a "makeshift" cyborg built from scrap. After the time skip, he incorporated Dr. Vegapunk's technology found on the island of Baldimore (Radical Beam Laser). But it was during the Egghead Arc that he reached his peak.

By studying Vegapunk's archives and the technology of the Void Century (such as the ancient giant robot), Franky became a living fortress. His "Franky Shogun" can now rival the toughest Zoan users, such as Sasaki of the Beasts Pirates.
Discover the crew's most impressive figures in our One Piece Figures collection.
The Thousand Sunny: The Secret Weapon?
Some theories claim that Franky incorporated part of the blueprints for Pluton into the construction of the Thousand Sunny. The "Coup de Burst" and Adam Wood (the strongest wood in the world) are clues supporting this theory.
The Sunny is destined to reach Laugh Tale. Franky has sworn to repair his ship all the way to the end of the world, making him the worthy heir of Tom, who built Roger's Oro Jackson.
To learn everything about the crew's history and dreams, visit our dedicated page about the Straw Hat Members.
Conclusion: The Steel Man with a Big Heart
Franky proves that technology is neither good nor bad; everything depends on who uses it. He chose to use his science for his captain's freedom.
Want to relive his epic battles? Dive into our summary of the chronological order of the arcs.
Stock up on Cola and visit our Mugiwara Store!