A Giant Rat appeared in NYC, so Zilla Junior and H.E.A.T. move in to try to capture it. Three redneck hunters appear and complicate matter though, as well as getting more than they bargained for when dozens of giant rats come from the bowels of the city. They finally call in the military, but are unable to get out of the tunnels before they get bombed. Zilla floods the rats' tunnels, and a team headed by Animal Palotti and Audrey Timmonds rescues H.E.A.T. from the tunnels. One of the largest rats survived, and was taken to the Aliens base of operations in the Pacific ocean. It was present during the launch of the invasion, but didn't take part, and disappeared after the ensuing events.
The smaller rats have tried to outrun Zilla Jr. with amazing speed.
The smaller rats are extraordinary jumpers, being able to jump on top of short buildings.
The medium-sized rats have the strength also carry humans by using one arm.
The rats have strength to grab humans with no sign of struggle.
The bigger rats are much stronger then the other two types of giant rats.