Quirinus.
Quirinus Quirrel
Ian Hart
Some of them are Professor Snape, Professor Quirrel, and the death eater.
Professor Quirrel (and technically Voldemort)
Professor Quirrel died in the first book, Harry Potter and the Philosopher's Stone.
Harry Potter, Ron Weasley and Hermione Granger go through a series of challenges to stop Professor Quirrel and Lord Voldemort from stealing the Philosopher's Stone. Harry then has to face both Quirrel and Voldemort alone which results in the death of Quirrel.
Not harry! Some of the people who CAN use dark magic are Professor Snape, Professor Quirrel, and the death eater.
In the first book, Professor Quirrel tried to knock him off. Members of the Slytherin Quidditch team also tried to knock him off as well throughout the years.
Professor Quirrel. He also voiced Voldemort in the first film because he was on the back of his characters head.
Professor Quirrel (Harry Potter 1). Also, his voice was used (modified) for Lord Voldemort.
Voldemort could be said to have controlled him but Quirrel could have chosen not to listen to him.