In 1954, stunt performer Haruo Nakajima zipped himself into a 220-pound suit of bamboo, wire mesh and latex, passed out from heat exhaustion after three minutes at a time, and lost 20 pounds over the shoot. This deep dive explains why that physical brutality mirrored the film’s purpose: helping a traumatized nation process nuclear holocaust. It starts with producer Tomoyuki Tanaka’s failed Japanese-Indonesian war drama, scrapped when visas were refused, and his desperate airplane brainstorm combining the success of King Kong re-releases and The Beast from 20,000 Fathoms with Japan’s resurgent nuclear anxiety after the Lucky Dragon No. 5 fishing boat was poisoned by the Castle Bravo hydrogen bomb test.

The episode covers the abandoned giant octopus concept, the dinosaur hybrid design, the debunked legend that Gojira was named after a burly stagehand, and Eiji Tsuburaya’s invention of suitmation after calculating that stop motion would take seven years. It details the miniature Tokyo built from wood, plaster and chalk, rigged with gasoline and scaled with forced perspective, plus composer Akira Ifukube’s one-week deadline and the roar created by dragging a leather glove across loosened double bass strings. It closes with the Americanized 1956 cut, Godzilla, King of the Monsters, which removed the anti-nuclear themes and spliced in Raymond Burr, without director Ishiro Honda’s knowledge.

• How a diplomatic failure in Jakarta accidentally launched the longest-running film franchise in history
• Why the filmmakers rejected zoo animal recordings in favor of a synthetic, metallic roar
• The National Diet Building built at a smaller scale to make the monster look even larger
• Dr. Serizawa’s oxygen destroyer dilemma and the alternative reading of Godzilla as a vengeful spirit
• Why Japanese critics called the film grotesque junk while the public turned out in droves