Title: Harry Potter and the Philosopher's Stone (film)
Content: Daniel Radcliffe as Harry Potter: Rupert Grint as Ron Weasley: Emma Watson as Hermione Granger: John Cleese as Nearly Headless Nick: The ghost of Gryffindor House. ; Robbie Coltrane as Rubeus Hagrid: Warwick Davis as Filius Flitwick: The Charms Master and head of Ravenclaw House. Davis also plays two other roles in the film: the Goblin Head Teller at Gringotts, and dubs the voice of Griphook, who is embodied by Verne Troyer. ; Richard Griffiths as Vernon Dursley: Harry's Muggle uncle. Ian McNeice was considered for the role of Vernon. ; Richard Harris as Albus Dumbledore: Hogwarts' Headmaster and one of the most famous and powerful wizards 
Title: Harry Potter and the Chamber of Secrets (film)
Content:  Philosopher's Stone reprise their roles in this film. Harry Melling portrays Dudley Dursley, Harry's cousin. James and Oliver Phelps play Fred and George Weasley, Ron's twin brothers; Chris Rankin appears as Percy Weasley, Ron's other brother and a Gryffindor prefect; and Bonnie Wright portrays their sister Ginny. Tom Felton plays Draco Malfoy, Harry's rival in Slytherin, while Jamie Waylett and Joshua Herdman appear as Crabbe and Goyle, Draco's minions. Matthew Lewis and Devon Murray play Neville Longbottom and Seamus Finnigan, respectively, two Gryffindor students in Harry's year. David Bradley portrays Argus Filch, Hogwarts' caretaker, and Sean Biggerstaff as Oliver Wood, the Keeper 
Title: Harry Potter and the Philosopher's Stone (film)
Content:  which Columbus was determined to maintain. The stuttering Defence Against the Dark Arts teacher at Hogwarts. David Thewlis auditioned for the part; he would later be cast as Remus Lupin in Harry Potter and the Prisoner of Azkaban. Hart also voiced Lord Voldemort, while Richard Bremmer provided his physical appearance and portrayed him as a hooded figure during a flashback. Additionally, Zoë Wanamaker appears as Madame Hooch, Hogwarts' flying instructor; Tom Felton portrays Draco Malfoy, a student in Slytherin and Harry's rival; before being cast as Draco, Felton auditioned for the roles of Harry and Ron. Harry Melling plays Dudley Dursley, Harry's cousin; and David Bradley 
Title: Harry Potter and the Philosopher's Stone (film)
Content:  as Argus Filch, Hogwarts' caretaker. Matthew Lewis and Devon Murray portray Neville Longbottom and Seamus Finnigan, respectively, two first year students in Gryffindor; James and Oliver Phelps play twins Fred and George Weasley, Ron's brothers, while Chris Rankin appears as his other brother Percy, a Gryffindor prefect, and Bonnie Wright appears as Ron's sister Ginny. Sean Biggerstaff portrays Oliver Wood, the Keeper of the Gryffindor Quidditch team; Jamie Waylett and Joshua Herdman play Crabbe and Goyle, Malfoy's minions; and Leslie Phillips voices the Sorting Hat. Derek Deadman plays Tom, innkeeper of The Leaky Cauldron; and Elizabeth Spriggs appears as the Fat Lady, a painting at Hogwarts.
Title: Lord Voldemort
Content:  Voldemort appears in every Harry Potter film, with the exception of Harry Potter and the Prisoner of Azkaban. Several actors have portrayed him in his varying incarnations and ages. In Harry Potter and the Philosopher's Stone, Voldemort's manifestation is as a face on the back of Quirrell's head, an effect achieved by computer generated imagery. Ian Hart, the actor who played Quirrell in the same film, provided the voice and the facial source for this character. Voldemort also appears in a scene in the Forbidden Forest where he is seen drinking the blood of a unicorn. As Voldemort's face was altered enough by CG work, and Hart's voice was affected enough, there was no confusion by 
Title: Harry Potter and the Philosopher's Stone (film)
Content:  all time. Harris initially rejected the role, only to reverse his decision after his granddaughter stated she would never speak to him again if he did not take it. Patrick McGoohan was initially offered the role, and showed interest, but declined due to health issues. Christopher Lee was also offered the role but turned it down due to scheduling conflicts. ; Ian Hart as Quirinus Quirrell: John Hurt as Mr. Ollivander: a highly regarded wandmaker and the owner of Ollivanders. ; Alan Rickman as Severus Snape: The Potions Master and head of Slytherin House. Tim Roth was the original choice for the role, but he turned it 
Title: Harry Potter and the Deathly Hallows – Part 2
Content: Daniel Radcliffe as Harry Potter: A 17-year-old British wizard. ; Rupert Grint as Ron Weasley: One of Harry's best friends. ; Emma Watson as Hermione Granger: Harry's other best friend. ; Helena Bonham Carter as Bellatrix Lestrange: A Death Eater and Sirius Black's cousin and murderer. ; Robbie Coltrane as Rubeus Hagrid: Harry's half-giant friend and a former member of staff at Hogwarts. ; Warwick Davis as Filius Flitwick: The Charms master and Head of the Ravenclaw house at Hogwarts; and also as Griphook, a goblin and former employee at Gringotts Bank. ; Ralph Fiennes as Lord Voldemort: A twisted, evil, power-hungry, powerful wizard, and the founder 
Title: Harry Potter and the Order of the Phoenix (film)
Content: Daniel Radcliffe as Harry Potter: A 15-year-old British wizard famous for surviving his parents' murder at the hands of Voldemort as an infant, who now enters his fifth year at Hogwarts School of Witchcraft and Wizardry. ; Rupert Grint as Ron Weasley: Harry's best friend at Hogwarts. ; Emma Watson as Hermione Granger: Harry's Muggle-born best friend and the brains of the trio. ; Helena Bonham Carter as Bellatrix Lestrange: one of Voldemort's most loyal Death Eaters and the cousin of Sirius Black. ; Robbie Coltrane as Rubeus Hagrid: the half-giant Gamekeeper and Care of Magical Creatures teacher at Hogwarts and a member of the Order of the Phoenix. ; Ralph Fiennes as Lord Voldemort: leader of the Death Eaters, a dark 
Title: Lord Voldemort
Content:  Lord Voldemort (, in the films) is a sobriquet for Tom Marvolo Riddle, a fictional character and the main antagonist in J. K. Rowling's series of Harry Potter novels. Voldemort first appeared in Harry Potter and the Philosopher's Stone, which was published in 1997. Voldemort appears either in person or in flashbacks in each book and its film adaptation in the series except the third, Harry Potter and the Prisoner of Azkaban, in which he is only mentioned. Voldemort is the archenemy of Harry Potter, who according to a prophecy has "the power to vanquish the Dark Lord". He attempts to murder the boy, but instead kills his parents, Lily and James Potter, and leaves Harry with a scar on his head 
Title: Harry Potter (film series)
Content:  Aside from the three lead actors, other notable cast members include Robbie Coltrane as Rubeus Hagrid, Tom Felton as Draco Malfoy, Alan Rickman as Severus Snape, and Dame Maggie Smith as Minerva McGonagall. Richard Harris, who played the role of Professor Albus Dumbledore, died on 25 October 2002 causing the role 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 

Question: who plays voldemort in harry potter and the philosopher's stone?
Answer: Richard Bremmer.
Ian Hart.