One of the most important characters in the Harry Potter saga was Neville Longbottom (played in the movies by Matthew Lewis), a friend of Harry and a fellow Gryffindor student at Hogwarts.

There are a lot of characters to keep track of in the magical "Harry Potter" universe, but it's impossible to forget about ...

The former Harry Potter star who played Neville Longbottom is in the new movie, 'Me Before You'. He appears alongside Game of Thrones star Emilia Clarke and Hunger Games' Matthew Lewis.