Christian Coulson, 23, will be one of the most hated young men in the country when he appears on the screen as Tom Riddle.
Christian is said to be over the moon about landing such a dastardly role. He's only just graduated from University and his first proper acting job was in a BBC war drama last year.
The equally evil Lucius Malfoy, father of Draco, is to be played by Black Hawk Down actor Jason Isaacs.
And Ron's dad, Ministry of Magic's Mr Weasley, is taken on by Mark Williams.
He's well known for playing various odd characters in TV comedy The Fast Show.
The Chamber of Secrets is released exactly a year on from the first Potter film on the 15 November 2002.