If you recall, as a young scientist, Brooks created the “Hollow Earth” theory, an idea that many thought was crazy.
With this, he sought to prove it by visiting Skull Island and, while he succeeded, he also decided to cover up his discoveries.
Like the Marvel Cinematic Universe, the series crosses over characters, with the most important character so far being Dr. Houston Brooks, who was played by Corey Hawkins in Kong: Skull Island and Joe Morton in Godzilla: King of Monsters.