The original script for Captain Marvel 2 was set to feature one of the Avengers' most powerful adversaries as the film's lead villains.
According to That Hashtag Show, the original script by Anna Boden, Ryan Fleck, and Nicole Perlman featured Michael Korvac as its main villain. The script was rewritten by WandaVision staff writer Megan McDonnell, though That Hashtag Show notes that both Korvac and Monica Rambeau were characters that made it to McDonnell's draft.
In Marvel Comics canon, Michael Korvac is a being from an alternate universe who ended up absorbing the Power Cosmic when attempting to hack into the database of Galactus' space station. He battled and killed multiple members of the Avengers and Guardians of the Galaxy before committing suicide when he found his wife Carina doubted him. Korvac has reappeared in Christopher Cantwell and CAFU's Iron Man run, intending to reclaim his godlike powers.
Captain Marvel 2 has begun to fill out its cast, with Zawe Ashton portraying the main villain and Marvel Studios reportedly looking for an actor in the vein of Michael B. Jordan or John Boyega to fill a role. Teyonah Parris and Iman Vellani will also reprise their roles in the film as Monica Rambeau and Kamala Khan, respectively.
Directed by Nia DaCosta and written by Megan McDonnell, Captain Marvel 2 stars Brie Larson as Carol Danvers, Iman Vellani as Ms. Marvel and Teyonah Parris as Monica Rambeau. The film arrives in theaters Nov. 11, 2022.
Source: That Hashtag Show