Nathaniel Buzolic stars in "The Vampire Diaries" on The CW in the recurring role of Kol, who is one of the original vampires and the brother of Klaus (Joseph Morgan).Australian actor Nathaniel Buzolic is best known for playing Paul O'Donnell in the BBC series "Out of the Blue." He studied acting with the Australian Theatre for Young People from 1998 to 2001 and at Screenwise from 2001 to 2004. He also starred in a number of school producti...