Unlike Chaiyo's two official co-productions with Tsuburaya Productions in 1974 (namely The 6 Ultra Brothers Vs. the Monster Army and Jumborg Ace & Giant), this production was unauthorized by Toei Company, Ltd., which produced the Kamen Rider shows.
In the mid-1990s, he joined Tsuburaya Productions, the creators of the popular Ultra Series, working as an Assistant Director on TV series such as Ultraman Tiga.
Tsuburaya Productions, Japanese special effects studio by Eiji Tsuburaya
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After the financial failure of his Dimentia 13 albums, Warner got a job in Japan with the JET Programme, and then later in 1994 with Tsuburaya Productions who made Ultraman.
The partnership between Rankin/Bass and Tsuburaya Productions also resulted with two more monster-based adventure films The Last Dinosaur (1977), and the extremely obscure The Ivory Ape (1980).
In the year before his death Toei Animation had launched production of an anime adaptation of his Captain Future novels and Tsuburaya Productions adapted Star Wolf into a tokusatsu series; both series were aired on Japanese television in 1978.
It is a revival of the 1967 classic Ultra Seven, and is the first in Tsuburaya Productions' Ultra hero series to be exclusively for an adult audience and in wide screen high-definition format.