If you've ever sat down to watch the latest "X-Men" movie and felt a sudden onrush of déjà vu, there might be a reason for that.

A new video from YouTube user Couch Tomato runs down all the ways in which the "X-Men" movies are actually completely the same. Granted, the video only covers four of the nine films in the series -- "X-Men 2," "X-Men: The Last Stand," "X-Men: Days of Future Past" and "X-Men: Apocalypse" -- but some of the arguments are nonetheless compelling, and bring up some of the stranger decisions at the heart of the "X-Men" movies.

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While the presence of a mutant with amplified healing powers won't shock anyone familiar with the comic book series, tropes like mutants attacking government officials and the obligatory femme fatale seductress scene are present in all four of the films analyzed. And there's always one mutant who has to "get the band together" by collecting four mutant allies and laying down the hurt—from Magneto's continuous recruiting efforts to Apocalypse's Four Horsemen.

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There are, of course, more humorous examples, such as the fact that in all four films a class is interrupted and never returned to, leaving onlookers to wonder if anyone actually learns anything at Xavier's School for Gifted Youngsters. And no one needs a detailed explanation of why someone's hair changed color in every single movie, but at least the screenwriters get credit for consistency.

But don't worry, diehard X-Men fans, plenty of other movies are pretty samey, too. Take, for example, "Batman v Superman: Dawn of Justice" and "Iron Man 2."