Peeves the Poltergeist adds to Filch's frustration by constantly causing chaos at Hogwarts. HBO's Harry Potter series could benefit from exploring Filch's backstory for more character depth.

The Harry Potter series is undoubtedly one of the biggest film franchises and pop culture phenomenons of all time. Central characters such as Harry, Hermione, Ron, Hagrid, Voldemort, and Draco are ...