Tilda Swinton as The Ancient One in Doctor Strange (2016)

Tilda Swinton's casting as the Ancient One in Marvel's 2016 film *Doctor Strange* generated considerable debate, with many critics citing it as an instance of whitewashing. In the original Marvel comics, the Ancient One is depicted as an elderly Tibetan man. Swinton, a white Scottish actress, portrayed the character, a decision that Marvel Studios defended as an attempt to avoid perpetuating Asian stereotypes and to diversify the character. However, this explanation was met with skepticism, and many argued that it prioritized market access, particularly in China, over authentic representation. Despite the controversy, Swinton’s performance in the film was generally well-received by critics, with some calling it "magnetic" and others "one of the film's strongest assets".