Fraggle Rock (1983)

Doc and his dog Sprocket have a hole in their wall, behind which live little furry creatures known as Fraggles in a place called Fraggle Rock. The Rock is also home to the Doozers (who are knee-high to a Fraggle) and the Gorgs (who are giants that think they rule the Rock). One gang of Fraggles (Gobo, Mokey, Wembley, Boober, and Red), under the guidance of the all-knowing Trash Heap (Marjorie), learn about each other and their neighbors and eventually befriend the Doozers, the Gorgs--and even Doc and Sprocket. Meanwhile, Gobo's Uncle Matt explores Outer Space (our world) and sends postcards to his nephew about the Silly Creatures (that's us).