
Jason Isaacs (Lucius Malfoy), Warwick Davis (Professor Flitwick and Griphook) and Matthew Lewis (Neville Longbottom) will also be attending the event that runs from Jan. 27 through Jan. 29.
"A Celebration of Harry Potter" will feature many wizardly things, including the largest Harry Potter Expo in event history, panels with film talent and an interview with Mary GrandPré, the illustrator of the book series.
More information on ticketing and hotels for "A Celebration of Harry Potter" can be found here.