Margaret Elizabeth Carter, better known as Captain Carter, is a supporting character in the 2022 film Doctor Strange in the Multiverse of Madness.
She is a war hero and member of the Illuminate on Earth-838. After getting enhanced by the super soldier serum, she met Strange of her reality and became a member of the Illuminati alongside Captain Marvel, Professor X, Black Bolt and Mister Fantastic. The team worked together to stop Thanos from wiping out half of the universe, but Supreme Strange allowed himself to be mercy killed due to causing an incursion. During the trial against an alternate version of Doctor Strange, she was killed by Scarlet Witch.
Like her original version she was portrayed by Hayley Atwell.