Peggy Carter's Captain Britain Origin & Connection To Steve Rogers

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Warning! SPOILERS for Doctor Strange in the Multiverse of Madness.

Peggy Carter's Captain Britain, a.k.a. Captain Carter, makes her live-action debut in Doctor Strange in the Multiverse of Madness and her origins have some times with Steve Rogers. Hayley Carter makes her live-action MCU return after appearing in Avengers: Endgame. This time, however, she plays a slightly different character than what she used to, as she now has her own superhero persona as Captain Carter.

Directed by Sam Raimi, Doctor Strange in the Multiverse of Madness sees Doctor Strange (Benedict Cumberbatch) further explore the multiverse. Set after the events of the Infinity Saga,  Doctor Strange 2 also features the debut of America Chavez (Xochitl Gomez) who has a unique power to travel through multiple realities quite easily. This makes her Scarlet Witch's (Elizabeth Olsen) target who is trying to move to a different reality where she can be with her sons.

Related: Doctor Strange In The Multiverse Of Madness Ending Explained (In Detail)

Thanks to its core story, Doctor Strange in the Multiverse of Madness further explored the MCU's burgeoning multiverse. Marvel Studios took advantage of the concept and used the sequel to introduce the franchise's version of the Illuminati. This new team includes Peggy Carter's Captain Britain. 

Introduced in the Marvel Comics in 1976, Captain Britain was originally intended to be the British counterpart of Captain America, although his story is significantly different from Steve Rogers in the sense that his powers come from a more mystical source than scientific. Captain Britain, also known as Brian Braddock, was granted powers by the magician Merlyn and his daughter Roma following a near-fatal accident.