is one of several characters portrayed by actress Nina Dobrev
on The Vampire Diaries
. She is the first big antagonist introduced on the series and continued to be a main villain throughout its run.
Despite her villain status, Katherine is also one of the most popular characters in the entire show. Many fans even like her more than Elena Gilbert, who is considered the show's heroine. For those of you that are diehard fans of Katherine, here are some interesting facts about the vampire vixen you may not know.