Concerns Over Ultron's MCU Return
The Marvel Cinematic Universe is known for its interconnectivity, with major characters making unexpected appearances in various movies.
This has been a staple of the franchise, as seen with Robert Downey Jr.'s surprise appearance in The Incredible Hulk and Samuel L. Jackson's recurring roles.
Villains have also made notable returns, such as Samuel Sterns in Captain America: Brave New World 17 years after his last appearance, and Tom Hiddleston's Loki, who has appeared multiple times throughout the franchise.
The Marvel Cinematic Universe has always been built around its interconnectivity.
Author's summary: Marvel's interconnectivity may ruin Ultron's return.