There is a way for Legendary to make Godzilla 3 even when the Demon King dies in a fight in Godzilla vs. Kong. Due to the brutal and inept nature of the giant monster fights, Godzilla vs. Kong has a fierce chance of being the loser in a horrible ending. Godzilla can kill Kong or vice versa.
Godzilla: King of the Monsters brought three more classic Toho Kaiju to Monsterverse when he introduced Mothra, Rodan, and Ghidorah, they all are connected with the Godzilla since the 1960s. As the protagonist, usually in Toho movies, Rodan was involved in the Battle of Ghidorah, while Mothra was associated with Godzilla.
During the final fight of Ghidorah with Godzilla, Mothra will fight with Rodan and defeat him with the help of her stinger. However, she was seriously injured by Titan’s fire powers. Mothra then flew in the direction of Gidhaur, who seriously injured Godzilla. Although Mothra was ejected from Ghorara’s gravity beam, her energy flowed into Godzilla and entered her fiery form.
Godzilla 3 can present a new Godzilla:
Godzilla vs. Kong is the ultimate winner, and although Godzilla comes in as a great favorite movie, it is possible that Kong may kill Godzilla. In neutral terms, Kang was lost in his first fight in King Kong against Godzilla (part of Godzilla’s atomic inhalation), but a toy leak showed that Kong has an ax, which could give him an advantage.
There are other dangers to Godzilla in the new movie but that is not from Kong. Although the attraction of Godzilla vs. Kong will be a clash between the two Titan Titans, the movie may involve multiple villains, and even if Godzilla survives a fight with Kong, he may die in conflict with Mechagodzilla. His robotic counterpart has always been one of Godzilla’s most formidable adversaries, and there have been cases where Mechagodzilla has presented him with a greater challenge than Ghidorah. Godzilla may not survive a fierce battle with Kong and Mechagodzilla.