Harry Potter (film series) to be re-cast for the third instalment, "Harry Potter and the Prisoner of Azkaban". David Heyman and director Alfonso Cuarón chose Michael Gambon to portray the character of Dumbledore, which he did for all succeeding films. Notable recurring cast members include Helena Bonham Carter as Bellatrix Lestrange, Warwick Davis as Filius Flitwick, Ralph Fiennes as Lord Voldemort, Brendan Gleeson as Alastor Moody, Richard Griffiths as Vernon Dursley, Jason Isaacs as Lucius Malfoy, Gary Oldman as Sirius Black, Fiona Shaw as Petunia Dursley, Timothy Spall as Peter Pettigrew, David Thewlis as Remus Lupin, Emma Thompson as Sybill Trelawney, Mark Williams as
Harry Potter fandom such as The Remus Lupins, The Parselmouths, Ministry of Magic, and The Whomping Willows) (see below) (Prophecy, 2007; Leakycon, 2009/2011/2012), Andrew Slack, founder of The Harry Potter Alliance, and StarKid, the cast of the fan made musicals "A Very Potter Musical", "A Very Potter Sequel", and "A Very Potter Senior Year". Still, the conventions try to attract the fandom with other fun-filled "Potter"-centric activities, often more interactive, such as wizarding chess, water Quidditch, a showing of the "Harry Potter" films, or local cultural immersions. Live podcasts are often recorded during these events, and live Wizard Rock shows have become a