In the universe Dr. Strange visits, it's not Carol Danvers (Brie Larson) who took the mantle of Captain Marvel, but, rather, Maria Rambeau (Lashana Lynch). In the 2019 "Captain Marvel" film, Rambeau was the friend Danvers left behind when she journeyed into space. And her daughter, Monica Rambeau (Teyonah Parris), appeared as an adult in WandaVision, and ended up with powers of her own. Monica is set to appear in "The Marvels" alongside Carol Danvers and Kamala Khan, aka Ms. Marvel.