Ratty is an unseen, though, possibly recurring character in the DHMIS series.
- Each episode features a hole in the wall, something commonly associated with mice and rats living in the walls of a house. It is possible that these holes were made by Ratty, and that the puppets have taken to naming and feeding him.
- Roy is seen uploading a youtube video named "Rat Eats Egg" in the longform kickstarter pitch video.
- Episode 1 shows a brief shot of entrails being taken into a hole in the wall, and later, a trail of blood trickling out onto the floor. It's possible that Ratty is responsible for both events.