One Piece Odyssee

Perched atop a massive floating fortress, Iron Horizon is a fortified Marine stronghold unlike any other. Unlike traditional Marine bases built on islands, G-07 was constructed on a colossal, reinforced seafaring platform engineered to drift with the Grand Line’s unpredictable currents. It is an impenetrable moving fortress, making it impossible for enemies to pinpoint its exact location for long. The base’s structure is a blend of military precision and cutting-edge Marine technology—massive black-iron walls, anti-pirate artillery, and aerial docking stations for Marine warships and jet dials. From above, it looks like a gigantic metal horizon cutting through the ocean, hence the name. It is home to some of the strongest and most disciplined Marines, handpicked by Zeke and Pieku themselves. Only the best are stationed here—this is no place for the weak.