The Metal Hero Series is a metaseries of tokusatsu superhero TV series produced by Toei for Japanese television. The protagonists of the Metal Hero Series are mainly space, military and police-based characters who are typically either androids, cyborgs, or human beings who don "metallic" armored suits. Henceforth, most of the Metal Heroes are also referenced as another example of the "Henshin (transforming) Heroes" genre. Usually, the genre revolves around a technological theme where technology, in the right hands, can be used for the greater good.