is a subgenre in
tokusatsu that involves Japanese superheroes or robots with the ability to grow to immense heights to fight
giant monsters. The Kyodai Hero is the mainstream superhero genre that is widely popular in Japan. The first and most famous Kyodai hero is
Ultraman who made his debut in 1966. Since then, Ultraman has helped spawn the Kyodai hero genre with countless shows such as
Godman and
Iron King.