After this the rest of the exo-force team migrates to the Golden City, and Ha-Ya-To (the fourth of the best pilots that was left behind), manages to find his own battle machine, The Golden Guardian, which helps the humans greatly in their battles against the robots. They also discover another code that unlocks four more Golden Guardians hidden in the city, and soon after the robots unleash their largest attack yet, The Golden City Attack, using the newest and largest robot battle machine ever, The Mobile Devastator.