Brown reprised her role as Madison Russell in "Godzilla vs. Kong," the fourth instalment in the Monsterverse film franchise. This 2021 sci-fi takes place five years after Godzilla conquered King Ghidorah, and features Madison and her friend Josh (Julian Dennison) investigating some new Godzilla attacks brought to light by conspiracy theorist podcaster Bernie (Brian Tyree Henry). In a 2021 interview with Coming Soon, Brown described "Godzilla vs. Kong" as a "coming of age story" for her character Madison.