The Marvel Cinematic Universe entered a new chapter with Phase Four, bringing the Infinity Saga to a close and kicking off the new Multiverse Saga. With some of the old guard gone, the franchise soon began introducing new heroes to fill their shoes. Many of them quickly became fan favorites, but without a team-up movie to bring them together, several heroes haven't been seen since their debuts.
11 Phase 4 Heroes Who Haven't Returned Since Their MCU Debut
The MCU introduced plenty of new superheroes in Phase Four, like Shang-Chi and Moon Knight, but fans are still waiting for them to return.