Logically, faced with the crystal suits that boasted high speed and agility, such a human-shaped machine two hundred meters tall was of little actual significance despite the astonishing sound and visual effect. It could even prove to be very clumsy.
However, the iron troll made of iron caltrops and magnetic field had a swiftness that was utterly disproportionate to its size. There was not any mechanical structure on its 'arms' and 'legs' at all, which were purely attracted by the magnetic field. Therefore, the limbs could be extended, retracted, or turned as it wished. They could even launch the enormous iron caltrops like cannonballs!
Before the real attacks were performed, the giant would release intense mental attacks first to shock the brain nerves of the Exos of the federal army, casting them into a momentary daze.