Question: What is the name of the dark wizard in the fantasy series by Joanne Rowling?

Context articles: J. K. Rowling
Kenji Terada
John Nettleship
Harry Potter
Harry Potter (character)
Parodies of Harry Potter
Death Eater
Harry Potter and the Philosopher's Stone
Dark Wizard
Church Cottage, Tutshill

Joanne Rowling, {'1': ", '2': ", '3': ", '4': "} ( ; born 31 July 1965), who writes under the pen names J. K. Rowling and Robert Galbraith, is a British novelist and screenwriter who wrote the "Harry Potter" fantasy series.
 The books have won multiple awards, and sold more than 400 million copies.
 They have become the best-selling book series in history and been the basis for a series of films, over which Rowling had overall approval on the scripts and was a producer on the final films in the series.
Kenji Terada (寺田 憲史 , Terada Kenji , born in 1952) is a Japanese scenario writer, anime director, series organizer and novelist.
 His more notable works include writing the first three games of the Final Fantasy series.
 He also worked on "", created the concept for the Sega CD game "Dark Wizard", and was the series organizer and main script writer for the "Kimagure Orange Road" series among other things.
John Lawrence Nettleship (1 August 1939 – 12 March 2011) was a British schoolteacher who taught chemistry at Wyedean School, Gloucestershire.
 His pupils there included Joanne Rowling, whose mother worked for some time as an assistant in his department.
 He has been stated to be a major inspiration for the character of Severus Snape in Rowling's "Harry Potter" series of fantasy books.
Harry Potter is a series of fantasy novels written by British author J. K. Rowling.
 The novels chronicle the life of a young wizard, Harry Potter, and his friends Hermione Granger and Ron Weasley, all of whom are students at Hogwarts School of Witchcraft and Wizardry.
 The main story arc concerns Harry's struggle against Lord Voldemort, a dark wizard who intends to become immortal, overthrow the wizard governing body known as the Ministry of Magic, and subjugate all wizards and muggles, a reference term that means non-magical people.
Harry James Potter is the title character and protagonist of J. K. Rowling's "Harry Potter" series.
 The majority of the books' plot covers seven years in the life of the orphan Potter, who, on his eleventh birthday, learns he is a wizard.
 Thus, he attends Hogwarts School of Witchcraft and Wizardry to practise magic under the guidance of the kindly headmaster Albus Dumbledore and other school professors.
 Harry also discovers that he is already famous throughout the novel's magical community, and that his fate is tied with that of Lord Voldemort, the internationally feared Dark Wizard and murderer of his parents, Lily and James.
The immense popularity and wide recognition of J. K. Rowling's Harry Potter fantasy series has led to its being extensively parodied, in works spanning nearly every medium.
 The franchise holds the record for the most fan fiction parodies, at over 900.000 Some self-described parodies have been targeted by Rowling and her publishers as plagiarism, while others have sold hundreds of thousands of copies without any threat of legal sanction.
 Misinterpretations of "Harry Potter" parodies have sparked at least two urban legends.
 Many "Harry Potter" parodies are self-published; others are put out as part of major comic productions, such as "Mad", "The Simpsons", "South Park", "Saturday Night Live" and "Robot Chicken", all of which have parodied "Harry Potter" several times.
 Rowling has also been parodied (and parodied herself) in a number of instances.
Death Eaters are fictional characters in the "Harry Potter" series of novels and films.
 They are a group of wizards and witches, led by the dark wizard Lord Voldemort, who seek to purify the Wizarding community by eliminating the Muggle-borns (wizards or witches born to non-magical parents).
 They also try to create a new order through the Ministry of Magic and spread fear throughout the Wizarding community by terrorising and killing important officials and other enemies of the Death Eaters, chiefly the members of the Order of the Phoenix.
 Although the reason why they are called "Death Eaters" has not been explained by J.K. Rowling, there is some evidence to suggest that it is a reference to their ultimate goal of preventing death and achieving immortality.
Harry Potter and the Philosopher's Stone is the first novel in the "Harry Potter" series and J. K. Rowling's debut novel, first published in 1997 by Bloomsbury.
 It was published in the United States as Harry Potter and the Sorcerer's Stone by Scholastic Corporation in 1998.
 The plot follows Harry Potter, a young wizard who discovers his magical heritage as he makes close friends and a few enemies in his first year at the Hogwarts School of Witchcraft and Wizardry.
 With the help of his friends, Harry faces an attempted comeback by the dark wizard Lord Voldemort, who killed Harry's parents, but failed to kill Harry when he was just 15 months old.
Dark Wizard, known in Japan as Dark Wizard: Yomigaerishi Yami no Madoushi (ダークウィザード 蘇りし闇の魔導士 ) , is a role-playing video game developed and published by Sega for the Sega CD.
Church Cottage in the village of Tutshill, Gloucestershire, England, is a Grade II listed building, thought to have been designed by the architect Henry Woodyer.
 It was the childhood home, between the ages of 9 and 18, of Joanne Rowling, author (as J. K. Rowling) of the "Harry Potter" series of fantasy books.