And suddenly, a mech from one of the units dispatched by Gaia. This one appears to be a A6-003 Juggernaut. Armed with a missile pack on it's back, and a machine gun equipped to each finger, the Juggernaut begins it's attack.
A building comes crashing down, and then another, stomping across town firing off shots from it's fingers. Cars explode beneath this bethemoth's feet, as it resembles nothing more than a large ball with arms and legs attached to it. It's head is the cockpit.
An aquatic mecha rises from the water. It's the R1-021 Gyser. From it's looks, it's a manta ray mixed in with a shark with a set of arms and legs. It begins shooting it's "oil shot" covering the blast radius with oil, and then proceeds to use the flamethrower equipped inside the palm of it's hand.
The entire place is on fire. One after another, these mechanical beasts cause chaos the world across. They seem to have a weakness.
But where? Meanwhile, back at the lab. "There, satisfied?" Gaia smirked. The client terminated the connection, and now Gaia proceeds to make some popcorn to watch the destruction from his hideout.