Prof. Albus Percival Wulfric Brian Dumbledore is a fictional character in J. K. Rowling's Harry Potter series. For most of the series, he is the headmaster of the wizarding school Hogwarts. As part of his backstory, it is revealed that he is the founder and leader of the Order of the Phoenix, an organisation dedicated to fighting Lord Voldemort, the main antagonist of the series.
Dumbledore was portrayed by Richard Harris in the film adaptations of Harry Potter and the Philosopher's Stone (2001) and Harry Potter and the Chamber of Secrets (2002). Following Harris' death in October 2002, Michael Gambon portrayed Dumbledore in the six remaining Harry Potter films from 2004 to 2011. Jude Law portrayed Dumbledore as a middle-aged man in the prequel films Fantastic Beasts: The Crimes of Grindelwald (2018) and Fantastic Beasts: The Secrets of Dumbledore (2022).
Rowling stated she chose the name Dumbledore, which is a dialectal word for "bumblebee", because of Dumbledore's love of music: she imagined him walking around "humming to himself a lot".
Source : Wikipedia
