One Piece: The Role Of The Iron Giant In The Egghead Arc, Explained  

The Iron Giant was recently introduced in One Piece during the Egghead arc. Its importance to the ongoing saga is tremendous and, although only a bit of information was provided to the fans about it, it has already been established that this Iron Giant is going to be significant both in piecing together the true history of the world and, at the same time, shaping a better future in the One Piece world.