Hanuman and the Five Kamen Riders(1975)

Original title: หนุมานพบ 5 ไอ้มดแดง

"A cruel and evil force known as "King Dark" lives on a diet of young women and children. He is opposed by the Monkey King and five supermen from different nations who prevent the capture of women and children needed for his survival." - Singaporean Newspaper Write Up . Semi-official Thai/Japan co-production between Chaiyo and Toei. Toei allowed the usage of the Five Riders vs. King Dark film while Chaiyo forgot to license the characters out (Source: Dubbing Wiki).