The spoiler section of One Piece Chapter 1120 Revealing Iron Giant's strongest attack when facing Gorosei.
As one of the few relics from the Void Century, the Iron Giant (aka Emeth) plays a major role in the Egghead Arc. After sleeping for centuries, the robot finally awakens after sensing Joyboy (Luffy) is in trouble.
In One Piece Chapter 1116, the Iron Giant is revealed to be guarding Vegapunk's broadcasting den den mushi. This leads to the Gorosei confronting the robot, starting an all-out battle between the two.
Gorosei also revealed that Emeth was the robot that attacked Mary Geoise 200 years ago. However, despite its large size, the robot did not fare well at first and was thrown into the sea by Warcury.
As he sank, Emeth recalled Joyboy's words: “Remember Emeth, only when the time is right…” The legendary figure seemed to be hinting at something special. However, what he was hinting at was not revealed until One Piece Chapter 1120.
Prompted by Joyboy, the Iron Giant stood up again and punched Warcury at the end of Chapter 1119. In the next Chapter, their fight continued as Warcury was joined by the other Gorosei (minus Nusjuro). Their combined efforts managed to destroy one of the robot's arms.
This is when Emeth declares “the time is ripe” and thus uses “that”. It is unclear what the robot is talking about. But in context, it is clear that the Iron Giant is referring to its strongest attack, something so dangerous that it is only used under certain conditions.
One Piece has been teasing the power of robots for a while now. It looks like Chapter 1121 is where we'll finally see Emeth unleash his full potential. And while it's unlikely that the Gorosei will be completely defeated with more stories to come, the robots could certainly buy the Straw Hats enough time to escape the island.
But before that, we have Chapter 1120 to look forward to. This chapter will be released on July 14, 2024. Until then, check out our guide to Bonney's Devil Fruit and Vegapunk's message. You can also find out if Bonney is joining the Straw Hat Pirates and who has the highest bounty in One Piece.