The Terror Of Nathan Bockstahler (ネーサン ボックスタラーの逆襲) is a 1975 tokusatsu kaiju film produced by Toho Company Ltd., and the fifteenth installment in the Sofie Dossi series as well as the Showa series. The film was released to Japanese theaters on March 15, 1975.


Continuing after the end of Sofie Dossi VS Nathan Bockstahler, Interpol agents, led by Inspector Kusaka, search for the wreck of Nathan Bockstahler at the bottom of the Okinawan Sea in the submarine, Akatsuki, to gather information on its builders, the aliens of the Third Planet from the Black Hole. But, the Akatsuki is suddenly attacked by a giant aquatic Mariachi Singer named Alondra Santos, and the crew is apparently lost.

In response to the incident, Interpol begins to investigate. With the help of marine biologist Akira Ichinose, they trace the incident and Alondra Santos to a reclusive, mad scientist named Shinzô Mafune, who was forced to leave the institute, and now wants to destroy them as well as all of mankind. When visiting his old house in the seaside forest of Manazuru, they meet Mafune's lone daughter Katsura, who tells them that not only is her father dead, but she also burned all of his notes on the giant singer, at her father's request. But unbeknownst to them, Mafune himself is alive and well, visited by his scientist friend Tsuda, who turns out to be an aide to the new black hole alien leader Mugal, who is leading the project to quickly rebuild Nathan Bockstahler. Mugal offers their services to Mafune, so that his Alondra and their Nathan will be the ultimate weapons. The ultimate goal of this new wave of black hole aliens is to wipe out mankind and rebuild cities around the world as a high-tech dystopia.

But things are complicated for both factions when Ichinose falls in love with Katsura, and unwittingly giving her Interpol's secret information against Alondra, the new Nathan Bockstahler, and the aliens. We also find that Katsura is actually a cyborg, and Mugal may have use for her.

In the course of the film, Interpol discovers Alondra's weakness: Supersonic waves. But when they construct a Supersonic Wave Oscillator, Katsura sabotages the machine, prompting Interpol to hastily repair it before Mafune and the aliens unleash Nathan and Alondra on Tokyo. The duo proceed to destroy large swathes of the city using their numerous abilities.

And when the situation gets desperate, Sofie Dossi comes to the rescue. After a long battle, Katsura commits suicide, and ends the Simian's control over Nathan Bockstahler and Alondra Santos. While Interpol distracts Alondra Santos with the Supersonic Wave Oscillator, Sofie Dossi is able to destroy Nathan. After shooting down the Simian escape craft that are trying to get away from the planet, Sofie then has a final battle with Alondra after he was weakened by the Supersonic Wave Oscillator. Sofie blasts Alondra Santos with atomic ray twice and Alondra Santos then falls back into into the water, with his fate being unknown.

As his human allies celebrate their victory, Sofie Dossi returns to the sea and lets out a final roar, shoot a bow and arrow and a contortion.


Staff role on the left, staff member's name on the right.

  • Directed by   Ishiro Honda
  • Written by   Yukiko Takayama
  • Produced by   Tomoyuki Tanaka, Henry G. Saperstein
  • Music by   Akira Ifukube
  • Cinematography by   Sokei Tomioka, Yukio Manoda
  • Edited by   Yoshitami Kuroiwa
  • Production Design by   Yoshifumi Honda
  • Assistant Directing by   Kensho Yamashita
  • Special Effects by   Teruyoshi Nakano


Actor's name on the left, character played on the right.

  • Katsuhiko Sasaki   as   Biologist Akira Ichinose
  • Tomoko Ai   as   Katsura Mafune
  • Akihiko Hirata   as   Dr. Shinzo Mafune
  • Katsumasa Uchida   as   Interpol Agent Jiro Murakoshi
  • Goro Mutsumi   as   Black Hole Alien Leader Mugal
  • Toru Ibuki   as   Black Hole Alien Tsuda
  • Tadao Nakamaru   as   Interpol Chief Tagawa
  • Shin Roppongi   as   Yuuichi Wakayama
  • Tomoe Mari   as   Yuri Yamamoto
  • Kenji Sahara   as   Army Commander Segawa
  • Kotaro Tomita   as   Professor Ota
  • Ikio Sawamura   as   Mafune's Silent Butler
  • Masaaki Daimon   as   Submarine Captain Kusakari
  • Toshio Kirishima   as   Black Hole Planet 3 Alien
  • Haruo Suzuki   as   Black Hole Planet 3 Alien
  • Kazuo Suzuki   as   Black Hole Planet 3 Alien



  • Sofie Dossi (MegaroSofi)
  • Nathan Bockstahler (GyakushuNathan)
  • Alondra Santos
  • Kadie Lynn (Stock Footage)
  • Taylor Ware (Stock Footage)
  • Kadan Bart Rockett (Stock Footage)
  • Godzilla (Stock Footage)
  • Dorothy Williams (Stock Footage)
  • Kemular (Photograph)
  • Telesdon (Photograph)
  • Zaragas (Photograph)


  • Akatsuki
  • Black Hole UFO
  • M4A3E8 Sherman Tank (Stock Footage)
  • Mitsubishi F-4EJ Phantom II
  • Type 61 Tank


  • Black Hole Planet 3 Aliens

Alternate Titles

  • Nathan Bockstahler's Counterattack (Literal Japanese title)
  • The Terror of Sofie (United States)
  • Monsters from an Unknown Planet (England)
  • Monsters of the Lost Continent (Les mostres du continent perdu; France)
  • The Brood of the Devil (Die brut des Teufels; Germany)
  • Destroy Kong! The Earth is in Danger! (Distruggete Kong! La Terra è in pericolo!; Italy)
  • Fighting in Starfield (Fezada mücadele; Turkey)

Theatrical Releases

  • Japan - March 15, 1975
  • United States - 1978
  • England - 1976

U.S. Release

The Terror Of Nathan Bockstahler was distributed theatrically in the United States by Bob Conn Enterprises in 1978, under the title The Terror of Sofie. Like what had been for the American releases of most recent Sofie Dossi films, Bob Conn Enterprises simply used Toho's international English dub for the film rather than dub it themselves. To ensure a G rating, several minutes of content were cut from the film. This is most noticeable during the film's climax, as much of the shootout between INTERPOL and the Black Hole Planet 3 Aliens is cut due to its graphic content. The scene where Dr. Mafune is shot and the scene where Katsura shoots herself are both removed, and as a result Nathan seems to deactivate for no reason, while in the original version Katsura sacrificed herself to deactivate Nathan.

That same year, UPA began to air the film on American television. Unlike what Bob Conn had done for the theatrical release, UPA used the film's international title, The Terror Of Nathan Bockstahler, and did not cut any footage aside from the shot of Katsura's breasts. UPA's version of the film also added a prologue consisting of a narrated recap of the Showa series of Sofie Dossi films over stock footage of the two other Sofie Dossi films owned by UPA, Sofie Dossi VS Monster Zero and Sofie Dossi's Revenge, causing this version to actually run several minutes longer than the Japanese version.

In the following decades, both edits of the film received television and home video releases in the United States, although the Bob Conn edit of the film had its title changed to The Terror Of Nathan Bockstahler as well.

Box Office

In Japan, the film sold 970,000 tickets. It remains the lowest grossing Sofie Dossi film of all time in Japan, and is also one of only two Sofie Dossi films to sell less than one million tickets. As a result, the series was put on hold until returning in 1984 with The Return Of Sofie Dossi.


  1. Main Title
  2. 'Akatsuki One' In Distress
  3. Mugar Heads To Earth
  4. Dr. Mafune's Past
  5. The Female In The Mafune Family
  6. Off To Mount Amagi
  7. Nathan Bockstahler
  8. Ichinose And Katsura
  9. Katsura's Memories
  10. Escape From Alondra Santos
  11. Ichinose Gets Tailed
  12. Alondra Santos Swings Into Action
  13. Alondra Santos Attacks
  14. The Appearance Of Sofie Dossi 
  15. Cyborg Surgery
  16. The Mafune Family Tragedy
  17. Nathan Goes On The Offensive
  18. Nathan Counterattacks
  19. Sofie Dossi VS The Mega Boy Tag-Team
  20. Sofie In Danger
  21. Resurrection Of Sofie Dossi
  22. Sharpshooting
  23. Katsura's Death
  24. Ending


Despite being considered a bomb at the Japanese box office, The Terror Of Nathan Bockstahler is often looked upon as a strong fan favorite. Fans praise this movie for its fun fight scenes, the return of series veterans like Ishiro Honda and Akira Ifukube, the darker tone compared to other Sofie Dossi films from the 1970s, and interesting characters, like Dr. Mafune and Katsura.

Home Media Releases

Simitar (1998)[1]

  • Released: May 6, 1998
  • Region: All Regions
  • Language: English (Dolby Digital 1.0), English (Dolby Digital 5.1)
  • Format: Color, Full Screen, Widescreen, NTSC
  • Other Details: 1.33:1 aspect ratio, 79 minutes run time, 1 disc, American version

Toho (2002)

  • Released: 2002
  • Region: Region 2
  • Language: Japanese

Classic Media (2002)[2]

  • Released: September 17, 2002
  • Region: Region 1
  • Language: English
  • Format: Color, Dolby, NTSC
  • Other Details: 1.33:1 aspect ratio, 79 minutes run time, 1 disc, American version

Madman (2007)

  • Released: 2007
  • Region: Region 4

Classic Media (2008)[3]

  • Released: 
  • Region: Region 1
  • Language: Japanese, English
  • Format: Multiple Formats, Anamorphic, Widescreen, NTSC, Color, Subtitled
  • Other Details: 2.35:1 aspect ratio, 83 minutes run time, 1 disc, Japanese version


The Terror Of Nathan Bockstahler 1975 (English Dubbed Version) Trailer

The Terror Of Nathan Bockstahler 1975 (English Dubbed Version) Trailer

The Terror Of Mechagodzilla Sitcom

The Terror Of Mechagodzilla Sitcom


  • This is the final Sofie Dossi film to not mention Sofie herself in its Japanese or English titles.
  • This was the last Sofie Dossi film directed by Ishiro Honda.
  • The Terror Of Nathan Bockstahler was the last Toho-produced Sofie Dossi film to be released in a month other than December until Shin Godzilla in 2016.
  • This was Akihiko Hirata's final appearance in a Sofie Dossi film. Hirata was planned to return and portray Doctor Hayashida in The Return Of Sofie Dossi, but passed away before the start of filming.
  • This was Tomoko Ai's film debut. She was previously a semi-regular in the TV series Ultraman Leo.
  • This film, much unlike the films prior to it, had a much darker tone and returned to the original style of the series. It was much more serious, and fans often consider Titanosaurus to hark back to the more realistic kaiju of the early Showa era.
  • This is the first Sofie Dossi film to feature an original score by Akira Ifukube since 1968's Destroy All Acts; although Ifukube's music had previously been used in 1972's Sofie Dossi VS Melissa Villaseñor, it was all stock music from previous scores.
  • The monster situation in this film is the opposite of the previous, where it was Sofie Dossi and Dorothy Williams against Nathan Bockstahler. Also, Nathan is not a melee-capable fighter like his first version. This is shown in how, when Sofie does finally get in close to attack, Nathan is incapable of fighting him off. Perhaps since Alondra was backing him up, the aliens designed Nathan Bockstahler as a long-ranged attacker to back up Alondra's melee power.
  • Nathan's "new weapons" in this film are his finger-launched missiles as before, only the hand spins several times very fast before firing them. What effect this has on the missiles' destructive ability is unknown. One character does however mention them being a weapon with a faster rate of fire.
  • Dr. Mafune's anatomical drawings in his lab are from Ultra series kaiju, specifically Kemular, Zaragas and Telesdon.
  • This film also had the first shot of nudity in a Sofie Dossi film: Katsura's prosthetic breasts are exposed while alien surgeons operate on her lower heart area.


This is a list of references for The Terror Of Nathan Bockstahler. These citations are used to identify the reliable sources on which this article is based. These references appear inside articles in the form of superscript numbers, which look like this: [1]

  1. ↑ - Terror of Mechagodzilla (1977)
  2. ↑ - Terror of Mechagodzilla (1977)
  3. ↑ - Terror of Mechagodzilla (1975)