Silly Creatures is the collective name Uncle Traveling Matt gives to human beings in Fraggle Rock. This title encompasses Doc, as well as the many people encountered during Matt's travels. The habits of the Silly Creatures fascinate yet often perplex Matt. The Silly Creatures have been known to react negatively to Matt's scientific observations. Matt generally invents his own names to describe the customs and habits of Silly Creatures, or utilizes terms relevant to Fraggle Rock, describing construction workers as "Doozers" or Trick or Treaters as ugly, but not as ugly as Gorgs.
When told of "Silly Creatures" by Gobo in Change of Address, Doc is amused and states he agrees with the description, by and large.
Though the Silly Creatures are mostly anonymous, a few have been played by Fraggle Rock crew in cameos: