I think diversity is the responsibility of directors and producers, Derrickson told Variety. In this case, the stereotype of [the Ancient One] had to be undone. I wanted it to be a woman, a middle-aged woman. Every iteration of that script played by an Asian woman felt like a Dragon Lady,' Derrickson explained, referencing another negative on-screen stereotype of an exotic and domineering Asian woman. Im very sensitive to the history of Dragon Lady representation and Anna May Wong films. I moved away from that. Whos the magical, mystical, woman with secrets that could work in this role? I thought Tilda Swinton.