There was a time when Michael Gambon pranked Daniel Radcliffe on the set of Harry Potter with a farting machine.

Hugh Jackman, Kevin Costner and more paid tribute to Harry Potter's Michael Gambon following his death.

Following news of Michael Gambon's death, many Harry Potter actors, including Jason Isaacs and more paid tribute.

Michael Gambon had a long and celebrated career, and famously played Dumbledore in the Harry Potter franchise.

From Michael Gambon's edginess to Richard Harris' gentle, kindly aura, here are some reasons why each actor made such a great Dumbledore.