The video "Why Was Wybie in Coraline (2009)" begins with a plot summary of Coraline, a 2002 novella by Neil Gaiman and a 2009 animated film based on the novella. The presenter notes that although the plots of the two works are the same, the characters, themes and messages are quite different. The book, she says, is primarily about "maturation and identity," while the film deals with "temptation and deception."
The presenter admits that she prefers the atmosphere of the book to that of the film, but does not claim that one is objectively better than the other. The major disadvantage of the film version, in her view, is the addition of Wybie, an unnecessary character created for the film. Henry Selick, the writer and director of the film, has said that Wybie is there so that Coraline has someone to whom she can talk, but the presenter points out that there are many other characters to fulfil this function, and that Coraline often talks to herself in any case.
The presenter complains that Wybie adds nothing to the story, and may only be there to persuade boys to watch a film with a female protagonist. He has the most screen time apart from Coraline herself and the Other Mother, and the movie tries to turn him into a major character. However, there is no substantial role for him to play in the action. Worse than this, he takes lines and actions away from other characters, making them duller as a result. His role as a guide and savior to Coraline also stops her from being the self-reliant agent she is in the book, and her unkindness to him makes her a less sympathetic character.
The presenter concludes by saying that she does not think Wybie's presence makes Coraline a bad film, though it would have been much stronger without him. She then invites feedback from viewers.