10 MCU Mistakes You Can NEVER Unsee

Captain America's shield doesn't obey the laws of physics... OR the laws of destruction.

Avengers Endgame Captain America shield mistake
Disney

The Marvel Cinematic Universe has given us ten-plus years of top-quality entertainment, an unprecedented streak that deserves to be applauded. Indeed, it's very hard to file any major complaints against Marvel Studios' cinematic output - but even a machine as well-oiled as this one isn't immune to basic human error.

Whether it's a continuity blunder, a spelling error, a visual effects gaffe, or even a crew member caught in the shot, there are literally hundreds of mistakes littered throughout the MCU's catalogue of 25 (and counting) movies.

Now, the good news is that unless you like to watch your movies at 0.25x speed, the vast majority of these mistakes will slip by unnoticed. A CGI error in two frames of footage is hardly a cardinal sin! But on the other hand, some of them are a lot bigger, and are much more noticeable than the rest - to the extent that they might even prove to be distractions upon repeat viewings of their respective films.

They don't ruin their respective films, mind you - let's not be over-dramatic here - but they are quite difficult to unsee once you know what to look for...

10. Tony's Magic Mug (Iron Man)

Iron Man Tony Stark
Disney

2008's Iron Man is one of the very best movies in the MCU, without question. Now excuse us while we point out something that's wrong with it!

During the sequence where Tony Stark creates his upgraded Mark 2 Iron Man suit, there's a shot of him sat at his computer (above), tinkering away on his latest design. In this shot, we can clearly see that his Stark Industries mug is upside-down on the desk, a clear indicator that it doesn't contain any sort of liquid.

And yet, in the very next shot (below), not only is the mug stood in its normal, upright position, but Tony even takes a swig of the liquid that's magically appeared inside it.

Iron Man Tony Stark mug continuity error
Disney

It's a weird mistake for the filmmakers to have missed, because who the hell leaves an upside-down mug on their desk in the first place?! And there isn't even a coaster in sight. Come on Tony, you seriously need to clean up your workspace.

Contributor
Contributor

Danny has been with WhatCulture for over ten years, and is currently Doctor Who Editor and WhoCulture Channel Manager, overseeing all of WhatCulture's Whoniverse coverage. In 2022, he took charge of WhoCulture and has grown it into the biggest Doctor Who channel on YouTube, and one of the biggest Doctor Who communities on the web full-stop. He has been writing and video editing since his early teens, and first got a taste for content creation after making his own Doctor Who trailers, off the back of a burning obsession with the Matt Smith era of the show. Like many his age, he first got into Doctor Who with the 2005 revival, but has since gone back and fallen in love with the classic years too. If you need someone to recite every Doctor Who episode in order, or to give you a random factoid about the making of Gridlock, Danny is the person to ask!