In his books, Eoin Colfer describes the character of Butler, Artemis Fowl's bodyguard and servant, as Eurasian. This is a heritage that helps him blend in wherever Artemis' adventures take them. But, despite this, director Kenneth Branaugh says he always envisioned black actor Nonso Anozie, who worked with him on Disney's live action Cinderella, in the part, and cast him as such.
The character of Commander Root, the fairy head of the LEPrecon, is described as a broad-chested, cigar-chewing male in Eoin Colfer's books. In the movie adaptation, however, the character has been changed to female, with Dame Judi Dench being cast in the role. This is similar to her casting in the James Bond films as M, the Chief of the Secret Intelligence Service and Bond's superior, despite the character being male in Ian Fleming's books.
This is Sir Kenneth Branagh's 2nd Disney movie after Cinderella (2015). He also directed Thor (2011) which is technically distributed by Paramount Pictures but is part of Disney's Marvel Cinematic Universe (MCU).