Which major characters are expected to have significant roles in Phase 5?

Several characters are central to Phase 5, including Kang the Conqueror (Jonathan Majors), Captain Marvel (Brie Larson), Loki (Tom Hiddleston), and the newly introduced Nova (who will debut in 'The Marvels'). Existing heroes like Spider-Man, Doctor Strange, and the Guardians of the Galaxy also continue their journeys.