Hanuman and the Five Riders

Hanuman and the Five Riders is a tokusatsu superhero film produced in 1975 by Chaiyo Productions of Thailand, founded by Sompote Sands. Chaiyo's own Kamen Rider film, half of it uses footage from the Kamen Rider X film Five Riders Vs. King Dark. The rest of the footage was made by Chaiyo themselves who even re-created the Kamen Rider costumes for some of the scenes in the film, most notably when they interact with Hanuman himself.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.