Imelda Staunton wears a pink dress and is kind of a jerk, just like Dolores Umbridge.
Sharlto Copley onceagain dons a suit of buffed up armor during the climax. He also sports a Beard of Evil and is pretty Ax-Crazy, much like his character in the latter.
Dawson Casting: Inverted. Aurora is 15/16, while Elle Fanning was 14 during filming. Compare that to the original film, where Aurora looked like she was in her 20s and was voiced by the just-under-30 Mary Costa.
Fake Brit: The cast is full of them. Elle Fanning as Aurora, Sharlto Copley as King Stefan, Angelina Jolie as Maleficent, Brenton Thwaites as Prince Philip.
The Other Marty: India Eisley was originally cast as Young Maleficent, but she was replaced with Ella Purnell after Disney executives expressed displeasure with her performance.
Real-Life Relative: The girl who plays the young Aurora is played by Jolie's daughter. This had to be invoked since she was the only child that didn't get scared when she saw Angelina in costume.
Two of her other children are nobles in the Christening scene at the beginning.
Recycled Script: A lot of the dialogue in the Christening scene was actually lifted from the animated film that Disney made years ago, with some of it being repurposed and additional dialogue inserted. The description of what happens afterwards also has this.
The original script had King Stefan as a much darker character, being the half-fairy bastard son of the King rather than just a farmboy, who never actually loved Maleficent at all, and who murders his father to take the throne rather win it from the already-dying King as in the finished film.
It also included an actual Queen of the Fairies, Ulla, Maleficent's aunt, who cursed her with her horns to mark that she was a nuisance (her big wings were often disruptive), and Maleficent's father was also a minor character. Miranda Richardson and Peter Capaldi were cast as these characters, respectively.
Maleficent was also supposed to be far colder to Aurora initially; instead of sending Diaval to care for her as a baby, she was to, effectively, leave her to die, and Diaval would end up secretly looking out for Aurora while bringing Maleficent around.