Julie Andrews is making a cameo in a movie that opens this weekend, but it?s not the one you expect. Instead of floating down on an umbrella in Disney?s ?Mary Poppins Returns? ? which she won an Oscar for in the original ? she lends her voice to a character in ?Aquaman.? Last month TheWrap reported Andrews appears briefly in a key role as Karathen, a gatekeeper blocking Arthur Curry?s (Jason Momoa) way, and who disapproves that the would-be king of Atlantis does not have fully Atlantean blood.