Concerns about Ultron's Return in the MCU
The Marvel Cinematic Universe is known for its interconnectivity, with characters often appearing in unexpected movies.
Major characters can show up at any time, as seen with Robert Downey Jr.'s surprise appearance in The Incredible Hulk.
- Villains like Samuel Sterns can reappear after many years, such as in Captain America: Brave New World.
- Tom Hiddleston's Loki has also made multiple appearances throughout the franchise.
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Author's summary: Ultron's return may ruin the Avengers villain.