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.

Peeves didn't care about offending students, professors, or even the Hogwarts caretaker, Argus Filch, who particularly disliked Peeves and his antics. Peeves reveled in the chaos he created or ...