"Terror of Mechagodzilla" stars Katsuhiko Sasaki, Tomoko Ai, Akihiko Hirata, and Gorō Mutsumi, and features Toru Kawai, Kazunari Mori, and Tatsumi Nikamoto as the fictional monster characters Godzilla, Mechagodzilla 2, and Titanosaurus, respectively. The film was released theatrically in Japan on March 15, 1975. It received a limited release in the United States in 1978 by Bob Conn Enterprises under the title The Terror of Godzilla. The film remains the least financially successful entry in the "Godzilla" franchise to this day.