Another of the walking dead, hm? Must have been quite a shock, waking up in the crypt with only the cold and Mordo to greet you...
I see the confusion on your face. Let me try to explain our... situation... to you.
We have been freed from the control of the Lich King by our new leader, Lady Sylvanas. The Dark Lady guides us in our war against the hated Scourge and the holdouts of humanity who dog our every step.