Succeeded by the late Michael Gambon after Harris’ passing in 2002, Harry Potter and the Prisoner of Azkaban was the debut of Albus Dumbledore who would finish the films out. While his chapters are very much in the ranks of the best Michael Gambon movies, fans had a monumental bone to pick with how The Singing Detective icon played the part.

HBO’s invisibility cloak is starting to come off of the top-secret Harry Potter series casting process, and it makes sense that we would start with our fifth (fifth!) Dumbledore in less than 25 years.

Mark Rylance is at the top of the casting wishlist for the new HBO "Harry Potter" adaptation, Variety has learned from sources familiar with the project. Rylance, who is starring as Thomas Cromwell in the highly-anticipated BBC period drama "Wolf Hall: The Mirror and The Light" (based on Hilary Mantel's novel),

Mark Mylod and Francesca Gardiner's upcoming Wizarding World reboot at HBO is eyeing Mark Rylance for the role of Hogwarts headmaster. Read more here.

Reports are HBO and Warner Bros. Television's adaptation of J.K. Rowling's "Harry Potter" novels is eyeing Mark Rylance to play Dumbledore.