Captain Fantastic was a regular feature of television series Do Not Adjust Your Set from 1967 to 1969 which appeared as a filmed insert between the videotaped sketches.
The title character was a bowler-hatted, plastic-mac wearing and umbrella carrying superhero played by David Jason.
There was no lip sync dialogue, so episodes played like silent movies, narrated by Jason in character over a frenetic piece of library music (Hero V. The Villain by Johnny Pearson).
Each week Mrs Black would attempt to take over the world using the electronic gadgetry contained in her "horrible handbag", while Captain Fantastic tried to set things right using his high-tech umbrella.
Once the run of Do Not Adjust Your Set finished, the serial was incorporated into Thames Television children's magazine Magpie.