Life is about to get far less lonely for Klaus... and potentially a lot more dangerous.

As first reported by TV Guide, The Vampire Diaries has cast two of this Original's brothers, both of whom are expected to appear in multiple episodes: Caspar Zafar will come on board as Finn, while Australian actor Nathaniel Buzolic will takes on the role of Kol.

Both will debut via flashback on episode 13, but the report cites each sibling's "bone to pick" with their brother for being "locked in those coffins for so long." Looks like Stefan might be opening up those boxes at some point in the future.

Vampire Diaries fans have already met Elijah, of course, along with Klaus' mother, father and incredibly gorgeous sister.

The show returns with new episodes on January 5 and you can give its first half a grade now via our TV Fanatic Report card.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.