"Head Fraggle" Travelling Matt continues to act as liaison between his own tiny world and Outer Space (otherwise known as the "real" world) during season four of the live-action puppet series
Fraggle Rock. As before, Matt manages to escape the detection of Doc, the human owner of the house behind which the giant stone separating Fraggle Rock from the Outside has been resting for all these many years. The season opens with Doc's dog, Sprocket, running loose in Fraggle Rock, much to the confusion of the residents. Later on, the sullen Boober Fraggle is transformed into "Dr. Fun" in a bid to become more popular; Matt returns from Outer Space just in time to discover a magical cavern; Boober and Wembley Fraggle find their friendship threatened by a rare "Perfect Blue Rollie"; Red Fraggle confronts a mighty dragon during a visit to T. Matthew Fraggle; and the gruesome Gorgs mistake an amnesiac Boober for their own son, Junior. In addition to the 13 new episodes seen on HBO during the 1986-1987 season, the series began its first rerun cycle on the TBS cable superstation. ~ Hal Erickson, All Movie Guide