Patrick Stewart's Professor X and the Superior Iron Man could actually be villains in Doctor Strange in the Multiverse of Madness. "The multiverse is a concept about which we know frighteningly little," Doctor Strange admitted in Spider-Man: No Way Home. That's because he's never watched Loki, which explained how the MCU's multiverse works — with branching timelines and different iterations, or "variants," of heroes. Every previous Marvel movie appears to be being woven into the same multiverse, and already it's resulted in a spectacular team-up between Tom Holland, Andrew Garfield, and Tobey Maguire as three different versions of Spider-Man.
But that's just the beginning, with the multiverse lying at the heart of Doctor Strange 2. The Super Bowl trailer for Doctor Strange in the Multiverse of Madness featured a delightful voice cameo, with Patrick Stewart addressing a captive Strange, who seems to have been arrested for crimes against the multiverse. Many also believe there's a glimpse of the Superior Iron Man, with speculation Tom Cruise will play the part; he was Marvel's favorite for the original Iron Man, but Jon Favreau persuaded the studio to go with Robert Downey, Jr., instead, so such a casting decision would be very appropriate indeed.
Related: Why Doctor Strange & Scarlet Witch Become Zombies In Multiverse of Madness
The general view is that Xavier and potentially Tom Cruise's Superior Iron Man are members of some sort of Illuminati group, who police the MCU's multiverse. But there's another possibility that rather than appear as heroes, the variants of Xavier and Iron Man are part of a group of villains. Doctor Strange 2 is being very careful indeed when it comes to admitting who the bad guys really are, and
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