the inception of the kyodai hero genre initially began with godzilla in the film "ghidorah, the three-headed monster". godzilla is portrayed as a personified natural disaster at first but over the course of the film franchise's many monster battles he is gradually put into the position of protector of the human race, a key trope of the kyodai hero genre. though godzilla established the minor concept of the kyodai hero, the genre technically began with p-productions live action adaptation of osamu tezuka's maguma taishi which predated the popular ultraman franchise, by six days. ultraman was created by godzilla films special effects director and supervisor eiji tsuburaya. ultraman quickly became very popular in its initial run that tsuburaya productions (the now owner of the ultraman series) produced a sequel show called ultra seven, the second kyodai hero show ever produced. though technically a kyodai hero, ultra seven mainly fought aliens throughout the show. ultra seven was the last tokusatsu kyodai hero show eiji tsuburaya ever produced. he died in 1970. since then, the increase in ultraman's popularity was so great that tsuburaya productions decided to bring back ultraman indefinitely, spawning dozens ultraman shows now referred to as the "ultra series".