When Universal Studios, responsible for both the "The Six Million Dollar Man" (1974) and the "The Bionic Woman" (1976) threatened to sue Cinema Shares Releasing over the title (Godzilla Vs. the Bionic Monster), the movie was quickly retitled Godzilla vs. the Cosmic Monster.
This film was the last appearance of the monster Anguirus and only appearance of King Shisa until their long-awaited return 30 years later in Gojira: Fainaru uôzu (2004).
This was produced as Godzilla's 20th Anniversary film (which was also stated in the original Japanese theatrical trailers).
This was the last Godzilla film scored by composer Masaru Satô.
The guardian monster King Shisa is based on the actual "shîsâ" lion-dog guardian statues in Okinawa. Originally from China, they are statues that ward off evil spirits. Another Japanese name for them is "komainu" (lion-dog).
While filming, the Godzilla suit accidentally caught on fire. The footage was used in the final version of the movie.
This is the last Godzilla film directed by Jun Fukuda.
This was Hiroshi Koizumi's final appearance in a Showa era film. He would return in Gojira (1984) which was the unofficial beginning of the Hesei series.