Recently, we were introduced to the Iron Giant, a giant sized robot that randomly attacked Mariejoa 200 years ago. For an unknown amount of time now, Vegapunk has been trying to find out how to awaken the robot, but he’s had no luck. He says that he has no idea what the Iron Giant is powered by. I have a theory. I think it’s powered by will, specifically Joy Boy’s will. I think 200 years ago, the Gum-Gum Fruit/Nika Fruit came into physical contact with the Iron Giant which temporarily awakened it and made it “resume” its duties of fighting the World Government. When it was about to attack Mariejoa, I think the Iron Giant knew it was going to be depowered, thus failing its task. When it woke up in the recent chapter, it said “I’m sorry Joy Boy” because he didn’t have the will to resume its duties 200 years ago. Now that Luffy awakened the Gum-Gum Fruit and the Five Elders are on Egghead, Luffy’s will awakened it again and now it can resume its duties. What do you all think?
