It's Christmas time, even though Klaus didn't want and didn't like Christmas. But he's coming now, at least because Rebekah told him that you would come.

Rebekah : See, we're going to be fun! smile

Caroline : Why is he doing here?, i thought he didn't like Christmas? confused.

Elijah: Brother? Why are you here?

Klaus : Shut up you guys, i can heard you all! Just mind your own business!

Kol : Rude, as always... rolles eyes