Lightning Man

Lightning Man ("Denkō Ningen" 電光人間) - English dub titled as "Zero, the Invisible Robot" - is an episode of the 1963 Astro Boy anime series.

Plot Summary
Astro Boy attends a robot convention with Dr. Ochanomizu, where scientists are showing off their latest creations. among them are a piano-playing robot, a cooking robot, and a tall female robot who's hair doubles as an umbrella. but the star of the show is an invisible robot named Zero, (created by Dr. Emil, who we later learn lost his place in the Ministry of Science because an earlier creation of his ran amok.) who you can only see if you shine a light on him. Zero is later kidnapped by Skunk Kusai and used to free a bunch of criminals, who aid Skunk in a Prison Break to free more criminals. Astro Boy stops them, but, unfortunately, Zero dies when a time bomb he was told to take to destroy a mind reading machine explodes, taking him down with it.

Characters
In Order of Appearance: