The names of the principal cast members of the "Harry Potter" films are Daniel Radcliffe, Emma Watson, Rupert Grint, Ralph Fiennes and Michael Gambon. Alan Rickman, Robbie Coltrane, Maggie Smith and Helena Bonham Carter are a few of the accomplished actors with significant roles in the series.
Daniel Radcliffe plays Harry Potter, "the boy who lived." Harry's friends are played by Emma Watson as Hermione Granger and Rupert Grint as Ron Weasley. The actors spent their teen years playing the wizarding students. Ralph Fiennes brings a fierce evil to the role of Lord Voldemort, known as "He who shall not be named." Richard Harris appears as Harry's mentor, Albus Dumbledore. After Harris's death in 2002, Michael Gambon makes the role his own as the replacement Dumbledore.
Robbie Coltrane is the huge hapless Hagrid, Maggie Smith is the protective Professor McGonagall, Robert Pattinson is fellow tournament competitor Cedric Diggory, and Gary Oldman is Harry's uncle, Sirius Black. Cast as Harry's allies, the characters all suffer on his behalf. Some of Harry's enemies are played by Alan Rickman as Severus Snape, Tom Felton as Draco Malfoy and Helena Bonham Carter as one of Voldemort's minions. Each of them brings a mixture of evil and sympathy to their complex roles. Actors playing a long list of Hogwarts professors include Emma Thompson as Sybill Trelawney, Kenneth Branagh as Gilderoy Lockhart and Ian Hart as Quirinus Quirrell.