The true identity revealed by the gas

Exploration Stage: Amusement Park
From: Rayden Storke
Description: The person we are after must have either caused the earthquake or been involved in some way with it. They are too agile to be human, and they drop machine parts all the time. Yes, I know! Can you help me find a tear gas grenade?
Completed: Thank you very much! These grenades are filled with tear gas, so you should keep your distance. I will now throw it at the spy! Okay, he's gassed... but he's not falling asleep! My hypothesis is right on target. He is made of machines!