This was the last TV episode Hayao Miyazaki directed, as well as the last work he ever did for "Lupin III." He would go on to an acclaimed career in directing animated movies at Studio Ghibli.
The robots in this episode were inspired by the robots from the Superman cartoon Superman: The Mechanical Monsters (1941).
Maki Ooyamada was voiced by Sumi Shimamoto who also did the voice of Clarisse in Lupin III: The Castle of Cagliostro (1979).
Originally the episode was not planned to be made after The Hexagon's Great Legacy however Telecom was available and Hayao Miyazaki had total creative control over the production of the episode. NTV was originally not going to air the episode as along with the other Telecom produced episodes from episode 99, the animation felt too different however they were ordered not to touch the episodes at all.