An effigy (from Complete Arcane) can be created by the Effigy Master PrC or anyone with the Craft Construct feat. There is no HD control limit... but it isn't cheap to create these constructs (even with cost reducing feats).
Also, they can only be molded after corporeal aberrations, animals, dragons, giants, humanoids, magical beasts, monstrous humanoids, or vermin. Of course, you could always use the disguise skill to make them look like zombies...
Well, having "dead flesh" hanging off "open wounds" should work.
