地球防衛軍
"The Mysterians" marks the first collaboration between Honda and special effects director Eiji Tsuburaya that was shot in anamorphic TohoScope, which the studio had just recently introduced. In their book on Honda, Ryfle and Godziszewski stated that accurate budget figures for "The Mysterians" are elusive. Honda had stated that the film was more expensive than "Godzilla" and "Rodan".