Marvel Studios and the MCU gained access to all its mutant characters in 2018 when Disney bought Fox. While this move meant that the MCU would soon be able to bring its own version of the X-Men to the big screen, it seems that the studio is having some trouble saying goodbye to some old versions of the characters. Fox's X-Men movies began in 2000, and the franchise spawned over 12 films in 2 decades. As such, some of the stars of these movies made a big impression on fans.