It's widely known now that the cinematic adaptation tells the tale of how the Wicked Witch of the West from the 1939 original was previously close with Glinda the Good, with the two actually having been roommates at university.

Wicked movie director Jon M Chu has explained why some elements of The Wizard of Oz prequel don't match up. The film tells the story of how multiple characters from Dorothy Gale's iconic adventure in Oz came to be the way they are, but for those whose only reference point is the 1939 film, some things don't make sense.