20 Stupid X-Men Movie Mistakes You Probably Missed

5. Professor X Is A Liar - X-Men

Remember back in X-Men in 2000 when Professor X tells Jean Grey, Cyclops and Storm that they were the first mutants he ever had the pleasure of teaching when he first opened his school? Nice moment wasn't it?

It's just a shame that it was subsequently proven to be a massive lie by the earlier timeline movies, which started with First Class and demonstrably didn't have any of the three Golden Students in the First Class of the title.

Xavier was teaching for a decade before any of the three even turned up at his school and even after the First Class and before them, he seems to have taught a significant number of other mutant kids. We can probably thank Bryan Singer for painting those who followed him into a corner, particularly as Matthew Vaughn may not have ever intended to tie the timelines together.