After two seasons of black-and-white episodes, it was decided to switch to color. But after only two episodes were completed, McGoohan quit the series to devote his energies to The Prisoner (1967). These two episodes of the third season, Koroshi (1967) and Shinda Shima (1967) were edited together to form the movie Koroshi (1968).
When at home in London, Drake drives an Austin Mini Cooper S, registration number 731 HOP; although undetectable in monochrome the colour scheme was Smoke Grey/Old English White. The car was deliberately chosen as a speedier and more inconspicuous vehicle than those preferred by contemporary fictional agents like James Bond or John Steed.
It is often erroneously reported that episodes of the series were filmed in Portmerion, Wales, that McGoohan used as the setting for The Prisoner (1967). In truth, none of the 1964-66 "Danger Man" episodes was filmed there, however, several episodes of McGoohan's earlier Danger Man (1960) series were.
Patrick McGoohan was adamant that Drake live up to a higher moral standard than the likes of James Bond. As a result, the character rarely becomes involved with women (beyond mission requirements), and rarely kills anyone. In fact, he almost never carries a gun.