Doctor Strange in the Multiverse of Madness will open up the MCU to the Multiverse. And when it does, we want these MCU characters to be in Multiverse of Madness.
The Loki series helped expand the Marvel Cinematic Universe in ways couldn’t even begin to fathom. Sylvie, an alternate timeline Loki, kills He Who Remains and kickstars the Multiverse. Her actions are the reason why the Sacred Timeline no longer exists. At the end of the show, Sylvie ended up escaping the consequences to her actions. Even if Sylvie remains a series-only character, there’s still a high chance for her to make a guest appearance in Multiverse of Madness. Considering she started everything with her own hands, Sylvie should be in the movie.
The Ancient One
Her death came during 2016’s Doctor Strange. Tilda Swinton, who plays The Ancient One on screen for the MCU, has never spoken about any further MCU engagements as of yet. But remember she stayed mum about her role in Endgame too. Considering Strange still has a lot to learn and he has committed grave errors that has shattered reality itself, a flashback sequence or Swinton appearing as the character in Astral form is not out of the question. In Marvel’s What If series, she actually used this ability to traverse time and rope in Prime Strange to fight Strange Supreme.
‘Agnes‘ was last seen in WandaVision. After manipulating Scarlet Witch into doing her bidding, she almost got what she wanted before Wanda erased her memories. A new Agatha Harkness series is coming to Disney+ in the near future. Before being trapped in her Agens avatar, Agatha told Wanda that she would need her aid for whatever’s coming next. Considering she is the world’s foremost authority on the Darkhold, a book of dark spells already seen in the trailer, Agatha Harkness would be a welcome addition to Multiverse of Madness.
Whether she does appear or if that was just an Easter egg to keep the fans confused and guessing, we will never know. In Marvel’s What If series, Peggy Carter ended up becoming the super soldier. As Captain Carter, Peggy helped defeat the Red Skull and saved the Multiverse from the machinations of Infinity Ultron. Chances are Hayley Atwell as Peggy Carter makes a short appearance in the Multiverse of Madness or as a full-blown supporting character. Our money is on the former. The trailer has already teased Captain Carter’s shield in one of the scenes. Now that are just toying with us to be frank.
Speed & Wiccan
Parallel reality variants of popular MCU characters are already making an appearance in Multiverse of Madness. So why not introduce variants of the Maximoff twins – Tommy & Billy Maximoff. We know we heard their voices in the final few seconds of WandaVision. Wanda knows they are alive, in some fashion that the Scarlet Witch is yet to figure out. Speed & Wiccan will also help set up Young Avengers, a superhero team Marvel Studios has been hinting at for quite some time now.
Uatu The Watcher
If one character from the What If series is already being teased, we say why stop there? The Watcher is an observer of realities who swore an oath of non-interference. Uatu was a major player in Marvel’s What If. And the Watcher race has already made their live action debut in the MCU. Multiverse of Madness could have Uatu as one of the founding members of the Illuminati, the shadowy group that has captured Doctor Strange in the Multiverse of Madness trailer.