Hayley Atwell's appearance at the "Doctor Strange in the Multiverse of Madness" premiere confirms that a super-powered Peggy Carter — or at least, a version of her — will appear in the multiverse-traveling movie. Rumors have swirled about potential cameos in the "Doctor Strange" sequel, which catches Stephen Strange (Benedict Cumberbatch), Wanda Maximoff (Elizabeth Olsen), and America Chavez (Xochitl Gomez) diving into the unknown to travel through different universes. Atwell has not appeared in a live-action MCU project since she and Steve Rogers (Chris Evans) finally enjoyed a lifetime together in "Avengers: Endgame," but it appears she's back for a new take on Captain Carter in live-action form.
Marvel Studios has slowly rolled out promotional material and teasers about cameos in the movie, from Patrick Stewart's trailer reveal to posters that outright tease Carter's presence via her Union Jack shield. Final television spots advertising the new movie show even more of Captain Carter's shield, directly suggesting that Carter will appear as a member of the Illuminati alongside Stewart's potential variant of Charles Xavier. Even as Marvel Studios has run more and more blatant hints toward the character's appearance, the studio has been careful not to show Carter's face: Atwell's red-carpet appearance finally confirms that she will, indeed, reprise her role as Peggy Carter once more.
Since Kevin Feige has teased Captain Carter's ongoing importance to the multiverse already, Atwell's incoming appearance may make re-watching "What If...?" worth it for MCU fans before "Doctor Strange in the Multiverse of Madness" drops on May 6.
