In my childhood, we had a number of children-oriented TV shows consisting of anime and tokusatsu including the ones imported mainly from the USA.
Gerry Anderson’s British SFX series such as Thunderbirds and Stingray were among them and gained much popularity among us children. (Gerry Anderson’s UFO was also my favorite in later years. I was almost addicted to it!).
They included Topo Gigio, Italian puppet show, which I remember I liked so much as a child.
While these trends originally stemmed from the scarcity of domestically produced drama shows including anime and tokusatsu, Tetsuwan (iron arm) Atom (Astro Boy/ Mighty Atom) is known as the first homemade TV anime series aired from 1963 through 1966.
After Atom, we had a series of domestically produced TV anime shows, and we enjoyed them a lot literally.
In the meantime, the emergence of the Ultra Series, the homemade full-blown tokusatsu series featuring kaijus, came as a total surprise to us.
Since then, anime and tokusatsu had waged a fierce battle in gaining popularity (viewership, more straightforwardly), which enabled us to enjoy each of them happily.
It is a famous story that Makoto Tezuka (now film director), son of Osamu Tezuka, great manga artist who created Atom, was absorbed in Ultra Q rather than W3 (Wonder Three) produced by his father’s anime production based on the manga created by his father.
I remember one explanation says Makoto burst into tears and embarrassed Osamu when his father tried to switch the channel to W3 while Makoto was watching Ultra Q.
At any rate, it was the golden age of anime and tokusatsu for us kids.