JK Rowling has apologised for killing off Remus Lupin a favourite of Harry Potter fans, in the final book She also said sorry previously, on 2 May, the date of fictional “battle of Hogwarts” took place 18 years ago, for the death of Fred Weasley Rowling has admitted she “didn’t enjoy doing it” and that she planned for Ron Weasley’s father to die in the final battle instead of Lupin and Nymphadora Tonk