For all the hype surrounding the premiere of Avengers: Doomsday this December, there is also a healthy amount of concern. Although Robert Downey Jr.’s MCU comeback is certainly cause for celebration, comments from the cast and crew have long provided reasonable doubt that the fifth Avengers movie will have its fair share of problems. While some of these matters feel like little more than rumors brought on by anticipation, that isn’t a universal truth.

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