Harry Potter (film series) was that the principal cast be kept strictly British, allowing nevertheless for the inclusion of many Irish actors, such as Richard Harris as Dumbledore, and for casting of French and Eastern European actors in "Harry Potter and the Goblet of Fire" where characters from the book are specified as such. Rowling was hesitant to sell the rights because she "didn't want to give them control over the rest of the story" by selling the rights to the characters, which would have enabled Warner Bros. to make non-author-written sequels. Although Steven Spielberg initially negotiated to direct the first film, he declined
Magical creatures in Harry Potter the drawing room.) In "Harry Potter and the Prisoner of Azkaban", Remus Lupin teaches his students in Defence Against the Dark Arts to approach a boggart in groups of two or more, so that the boggart will have difficulty in choosing which one to frighten. The "Riddikulus" charm is used to combat Boggarts, by changing their appearance into a less fearsome or even comical apparition, which weakens the creatures. When Harry Potter approaches the boggart, it takes the form of a Dementor. Centaurs in the Harry Potter universe are wild creatures who claim to possess intelligence greater than humans. Their