Hanuman and the Five Kamen Riders (1975)

With an unquenchable thirst for the blood of virgin women, the wicked King Dark enslaves the brilliant Thai scientist Dr. Wisut to create an army of monsters to put an end to the chivalrous efforts of the cyborg warrior Kamen Riders. Where their efforts fail, can the Hindu god Hanuman help? Edited from Five Riders vs. King Dark (1974).