The Tribble-Like Creatures were a group of pets owned and trained by Sidney. They were depicted as colorful, mischievous balls of fluff that would mess up Sidney's room frequently.
Unfortunately, after being thrown out of Sidney's room, a barrel pushed by Arthur went out of control, broke through the ceiling and rolled over the creatures, crushing them in the process. Their flattened corpses were eaten afterwards by Trevor.
- During the scene where the creatures are messing up Sidney's room, there are eight to nine of them. But in the next scene, there are only six or seven. This can lead to the implication that some of the creatures are still alive, only missing or off-screen.