Ultraman: Episode 1 - Ultra Operation No. 1 (1966)
https://www.youtube.com/watch?v=tP05cLPgRpI - from the TokuSHOUTsu YouTube channel (25 mins - 1080p - Eng. subtitles)

Synopsis:
Ultraman is escorting his prisoner to its final destination. The prisoner escapes and heads toward Earth. As Ultraman follows in pursuit, he accidentally crashes into an Earth craft, injuring its pilot and altering both of their lives forever.

Directed by Hajime Tsuburaya.

Cast: Susumu Kurobe, Akiji Kobayashi & Hiroko Sakurai.

Trivia:
Since its debut, both the show and character became international pop culture phenomena, inspiring rip-offs, imitators, parodies, tributes, and a multimedia franchise centered around spin-off characters based on Ultraman. The series has been recognized by Guinness World Records for “TV series with most number of spin-offs.”

IMDb link
Wikipedia article (for entire series)

Some additional information about TokuSHOUTsu:
TokuSHOUTsu™ is dedicated to all things tokusatsu, featuring TV shows and live-action films with eye-popping special effects, vicious monster brawls, superhero stunts and spectacular sci-fi. The TokuSHOUTsu channel streams on Pluto TV, with select titles also available on demand at Shout! Factory TV.