"But, Elder, how shall we find them?" a hesitant Goblin Commander asked from the side.
They had already understood the enemy's ability to disguise themselves, able to take on the appearance of any mecha. This was the most difficult aspect. In order to expose the enemy, they had already lost hundreds of advanced mechas, but to no avail.
What next? Would they need to destroy all the mechas in the city just to find him?
"..."
Barney was rendered silent by this question. After pondering for dozens of seconds, he finally lifted his head: "Use the Weighing Robots!"
The enemy's disguise ability was perfect in replicating appearance, enough to fool the eye, but there was one thing they could not falsify, and that was weight.