We saw this in the last chapter :
What does it mean ?
It doesn't look like Mars read about the Giant Robot in a book or a report but more like he met the giant robot 200 years ago since he recognized him immediately.
So are the Gorosei from the Void Century ? Or just random humans ?
How old are they ?

What does it mean ?
It doesn't look like Mars read about the Giant Robot in a book or a report but more like he met the giant robot 200 years ago since he recognized him immediately.
So are the Gorosei from the Void Century ? Or just random humans ?
How old are they ?