Star Wars: The Clone Wars- The Clone Wars
The Separatist Hero Unit List:
Darth Maul, Savage Oppress, General Grievous, Nute Gunray, Wat Tambor, Poggle the Lesser, Asajj Ventress, Count Dooku, Durge, Whorm Loathsome, Lok Durd and Pre Vizla.
This is the Hero unit list for the Separatists. It is possible that this could change later on.