Chaiyo Productions' Hanuman Collection

After a valiant Thai boy is brutally murdered by a gang of archeological looters, his soul is joined with the Hindu god Hanuman, who teams up with Ultraman and his brethren against familiar Ultra-foes unleashed by a weather control experiment gone awry, in this influential Thai-Japanese co-production.

"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).