Doctor Strange in the Multiverse of Madness has finally arrived, with the Marvel blockbuster arriving to great fanfare and an impressive box office this past weekend. As much as Multiverse of Madness is concerned with the long-running character arcs of Stephen Strange / Doctor Strange (Benedict Cumberbatch) and Wanda Maximoff / Scarlet Witch (Elizabeth Olsen), it’s been a bit of an open secret that the film has its fair share of surprises with regards to larger Marvel canon. That can especially be seen with the film’s approach to The Illuminati, with the group providing an opportunity to fully introduce characters from the X-Men and the Fantastic Four, in the form of Charles Xavier / Professor X (Patrick Stewart) and Reed Richards / Mr. Fantastic (John Krasinski), respectively. While speaking to ComicBook.com about Multiverse of Madness, screenwriter Michael Waldron addressed the fact that the film helped bring characters from both teams into the MCU, calling it all a team effort.