First broadcast on the ITV regional franchises between 1968 and 1969, the 30-episode series was the sixth and last of the Andersons' productions to be made primarily using a form of marionette puppetry dubbed "Supermarionation". Their final puppet series, "The Secret Service", would include extensive footage of live actors. As in the preceding series, "Captain Scarlet and the Mysterons", the puppets of "Joe 90" are of natural body proportions as opposed to the caricatured design used for "Thunderbirds" and earlier Supermarionation productions.