Rattle

A rat that was found in the vents by Rover. It had the initial reaction to bite him, though quickly adjusted after realizing he wasn't hurting it. After showing Iris, she quickly grew attached and gave it the name "Rattle." It mostly stays near either Iris or Rover, not really interacting with the other crew members.

It's unknown what exactly happened to Rattle before it was found, though it likely snuck onto the ship while the group's ship was parked at a MIRA base. After some examinations from Sage, she deduced that the rat had been tested on at some point, though it isn't infected with anything. It does appear to be smarter than average though.