In 1965, they would finally co-produce the story with financial backing from Henry G. Saperstein's film company Henry G. Saperstein Enterprises into this film. A new dinosaurian opponent named Baragon was created to replace Godzilla as Frankenstein's opponent and the script was slightly altered. Most of the concepts from the original story treatment were retained in this version, such as the irradiated heart of the monster, the monster's relentless pursuit of food and a natural disaster defeating the monster during the climax. In addition, most of the characters from the original story, such as research scientist Dr. Bowen (played by Nick Adams), would be retained. In the American version, Jerry Sohl would get credit for a synopsis and executive producer Reuben Bercovitch would get credit for the story.