"Masked Rider". I know that the translation is that, but is it actually known like that in English? In Brazil it's widely known by its original name, Kamen Rider. The old series, "Kamen Rider Black RX", was very popular in Brazil back then. Ricardo Cruz, a Brazilian tokusatsu and anime singer on YouTube, that has even sang with Yumi Matsuzawa (Saint Seiya) and Akira Kushida (Jaspion), has made a great cover of its opening: https://youtu.be/Idck-S09XYg.

His Jiraiya cover is also worth checking: https://youtu.be/SOSZZtdgz-g.