'The Vampire Diaries' Originals cast: Nathaniel Buzolic and Caspar Zafer play Kol and Finn (Plus: How many coffins are there?)

casper-zafer-nathaniel-buzo.jpgBig news, "Vampire Diaries" fans! The remaining Original siblings have been cast  -- and they're both guys, making Rebekah the sole sister (which explains a lot).

British actor Caspar Zafer (left) is set to play Finn, a brother described as "quiet, but with a dark side" in the casting breakdown. Kol, the final Original sibling, will be played by Nathaniel Buzolic. Buzolic, an Australian actor, is best known from Aussie soap "Out of the Blue." The casting was first reported by TV Guide.

Both brothers are going to wake up not-too-pleased with Klaus ( Joseph Morgan), and understandably so, seeing as he not only staked them and stuck them in coffins, but it's now been revealed that he murdered their mother. We can expect to meet Finn in episode 313 -- no word yet on when we'll meet Kol.

To clear up a few things -- yes, those are the only two remaining siblings.

However, there are a few extra coffins in Klaus's collection... and we will find out why after the show returns.

"There were seven children in the Original family," executive producer Julie Plec tells us. "What we've learned is that one of them died before the parents came to the new world, one of them died at the hands of the werewolves -- poor Henrik -- which leaves five children. There's definitely a question of why, if there are only two left, why are there all those coffins. That is a good question, and that's something that will be answered."
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