https://wowpedia.fandom.com/wiki/Baroness_Anastari
Baroness Anastari was once a baroness in life, but she was brutally murdered by the Scourge and is now under the control of the Lich King. She now guards a ziggurat in Stratholme and after the Cataclysm gave orders to Karthis Darkrune and Omasum Blighthoof to imprison Gidwin Goldbraids until she could try to turn him into a death knight.
No Lich King required.