10 MCU End Scenes That Were Scrapped
9. The Mystery Tag (Iron Man 3)
The post-credits scene in Iron Man 3 is a fun, but ultimately pointless exchange between Tony Stark and Bruce Banner, with Bruce - who is struggling to keep his eyes open - trying his best to serve as Tony's therapist.
More banter between Tony and Bruce is never a bad thing, but interestingly, this scene was a last-minute addition after the original idea for the tag was scrapped.
In 2013, Mark Ruffalo stated that Marvel Studios "had an idea" for what the Iron Man 3 post-credits scene was going to be, but for unknown reasons, they dropped it. Then, Robert Downey Jr came up with the idea for the therapy scene just as the movie was being finished off, and evidently, the filmmakers decided to go with this option.
So... what was the original tag? Why was it abandoned? We don't know. At the time, there were lots of rumours that it would've seen Tony fly off to meet the Guardians of the Galaxy, but with hindsight, that doesn't seem plausible in the slightest.