Robert Downey Jr.'s shocking return to the Marvel Cinematic Universe as Doctor Doom divides fans
![Robert Downey Jr.'s shocking return to the Marvel Cinematic Universe as Doctor Doom divides fans](https://media-cldnry.s-nbcnews.com/image/upload/t_fit_1500w/rockcms/2024-07/240728-robert-downey-jr-vl-422p-3eee85.jpg)
Downey had seemingly finished his Marvel career in 2019 when, after playing Stark across 10 films, his superhero alter ego Iron Man finally died fighting Thanos in “Avengers: Endgame.”