Robot

These artificial humanoid troopers are engineered by Isaac to follow his orders and reinforce the Marine occupation of Jail Island. Their debut comes as enemies in a non-canon title, the World Seeker video game. Shaped to the size of an ordinary person, each one wears silver armor plating over black joints, and a rectangular head carries a slim vertical slit that seems to work as an eye.

Every robot is an advanced fighting unit loaded with serious firepower. No common islander can stand against one, and they are sturdy enough to press even Luffy, absorbing several Gear 3 hits before they drop. Rocket jets sit just beneath their knees, giving them flight and aerial assaults, and they can also plunge jet-first into the earth to deliver a crushing stomp. On the left forearm sits a Gatling gun for hosing down targets, while the right forearm churns out timed bombs that fall to the ground and burst moments later.

Isaac directs the robots throughout the game's events. He first turns them loose on the Thousand Sunny, where Usopp, Franky, and Trafalgar Law beat them back, then later sics them on Zoro at the Prison Tower and dismisses their appearance as a test run. To sow chaos he seals his sister Jeanne inside a robot suit that spawns endless units, but Luffy and the Straw Hats break the suit apart, quell the robot attacks across the island, and undo Isaac's scheme.