The mid-credits scene introduces us to a mysterious sorceress named Clea (Charlize Theron), who approaches Doctor Strange in NYC to tell him his actions have caused an incursion in the multiverse and that he must fix his mistakes. The two then appear to walk into the Dark Dimension, which is a void within the multiverse.
According to Marvel.com, Clea has an interesting family background. Her father, Prince Orini, is the son of Olnar, who was once the ruler of the Dark Dimension. Meanwhile, her mother, Umar, is the sister of Dormammu, making Clea his niece. In the comics, Doctor Strange and Clea fall in love and get married and becomes Sorceress Supreme, which makes us wonder whether she'll be Stephen's love interest in a future film.
