Godzilla x Kong: The New Empire – The movie has two villains. What monsters are they?
ATTENTION! THIS CONTENT IS A RUSSIP, SO IT MAY BE TRUE, BUT IT MAY NOT BE TRUE.

From the official teaser of the movie Godzilla x Kong: The New Empire we know that the villain is supposed to be a monster from the Kong race. That’s all we know about him so far. We don’t know who he is, what his motivations are or where he came from. According to information from the test show, Godzilla and Kong will have one more opponent.
Godzilla x Kong: The New Empire – monsters
The second Titan posing a threat to Godzilla and Kong is a certain Shimu. The monster has already been revealed in the game Call of Dutywhich introduced DLC referring to the movie Godzilla vs. Kong. There was his painting in one of the caves and that’s all we know about his appearance at the moment.

Previously, it was speculated that one of the opponents from the Japanese movies might appear. While it is still possible, at the moment it is certain that these two monsters are the main enemies. However, no one confirms whether they are the only ones.
This is unofficial information, which no one confirms or denies. Godzilla and Kong will return to screens in 2024.
Source:
https://www.godzilla-movies.com/