The 6 Ultra Brothers vs. The Monster Army

Following his death, a boy named Kochan gains the power to turn into Hanuman. He joins forces with six Ultra Brothers to battle five monsters that were awakened when a rocket test site was destroyed. This action and science fiction fantasy is a joint production between Japan and Thailand.

The film was co-directed by Shohei Tôjô and Sompote Sands. For both directors, this project followed their 1974 collaboration, Hanuman and the Seven Ultramen. In Tôjô's career, it preceded his 1996 work, Chouriki Sentai Ohranger: Olé vs Kakuranger. The screenplay was written by Toyoaki Dan, Bunzô Wakatsuki, and P. Piml, and the production was overseen by producers Nikhom Sihsurat, Prasert Thongsak, and Hisao Itô.

The credited cast features 27 performers. Leading the voice cast are Ai Sakuma as Kochan, Yoko Kuri as Marissa, and Sumiko Shirakawa as Annan. Other voice roles include Ryuji Nakagi as Dr. Wisut, Junpei Takiguchi as Sripouk, and Shingo Kanemoto as Srisuriya. Released on March 17, 1979, the movie has a runtime of 80 minutes.