Supersonic Man is a 1979 Spanish film about,
Kronos, a humanoid extraterrestrial (Richard Yesteran), has been sent to planet Earth in order to help humanity against its own threats. Setting on in New York City, he becomes a superhero, Supersonic Man. He confronts nefarious Dr. Gulik (Cameron Mitchell) who plans to take over the world.
Found an English-language dubbed version of the trailer on YouTube, and it is everything I’d hoped it would be:
