The Vampire Diaries actor Ian Somerhalder has claimed that his character used to be just as evil as the vampire/werewolf hybrid Klaus, played by Joseph Morgan. Ian also admitted that he believes that the dark side of Damon will make a return in future episodes.
Somerhalder explained, "He was f**king brutal! He was awful! You know a cat who plays with a mouse, and then it'll wound it, and watch what happens when it's wounded? I mean, it's crazy. I could see Damon going back to that level of bad, because he can't sustain this for another eighty episodes. No way. There's the good and the bad; you have to take both of them."
He added, "I mean, the capacity that Damon has to be good and selfless, Stefan has to be evil and heartless. Those, I think, may flip-flop several times." The Vampire Diaries continues every Thursday at 8pm on The CW in the US and Every Tuesday at 9pm on ITV2 in the UK.