Rats are both critters and enemies and are found mostly underground on Terra and on Umbra. Huge, King, and Spiked rats are enemies but have no abilities, as they just deal damage by walking into the player. There are currently 5 types of rats: Brown, Grey, Huge, King, and Spiked. Every rat is about half size as the player except the Huge and King rats.
 Brown Rat
 Huge Brown Rat
They are found half way underground on Terra.
 Grey Rat
 Spiked Grey Rat
They are found half way underground on Terra. They throw small darts (2 at a time) at the player.
 King Rat