Popular Potter is a reference to the HARRY Potter series of books and films. The main character of the series is HARRY Potter, which is a five-letter word that fits the crossword solution. HARRY Potter is a young wizard who attends Hogwarts School of Witchcraft and Wizardry and embarks on a journey to defeat the dark wizard Lord Voldemort. The series has become one of the most popular and successful franchises in history, with millions of fans around the world.