In late April, George Takei spoke out against Marvel's casting of Tilda Swinton as the Asian character "The Ancient One" for the upcoming Doctor Strange film starring equally white person Benedict Cumberbatch. Marvel had recently explained that it "has a very strong record of diversity in its casting of films and regularly departs from stereotypes and source material to bring its MCU to life."

“The Ancient One," Marvel explained, "is a title that is not exclusively held by any one character, but rather a moniker passed down through time, and in this particular film the embodiment is Celtic." Marvel opted to avoid The Ancient One's Tibetan background so as to not alienate Asian audiences.