Taiyo Sentai Sun Vulcan (1981)

It's the very first Super Sentai series what made many of it's successors possible. If you want to watch the original first season of the Super Sentai series.

It's the 4th sequel of the series from Super Sentai right after Denshi Sentai Denziman which is the 3rd sequel. If you would like to watch the super sentai series chronologically.

It's the 5th sequel of the series from Super Sentai right after Taiyo Sentai Sun Vulcan which is the 4th sequel. If you would like to watch the super sentai series chronologically.