"Originally, but once they found a food source, more and more of them began arriving. They prefer to eat corpses, but they aren't shy about making them if necessary. Their goals would interfere in ours, so we converted them from their Master to our Mistress, bringing them under our control. We kept their numbers low, and blunted their ambitions. They are angry now, and their anger is making them resist our command. They are no less dangerous than the other creatures you've faced, and may even be more so. They are corrupting by their very nature, and prolonged exposure to their kind tends to provoke transformations in yours. Eventually they will anger the Mistress, and that will be bad for everyone. If we can get them to come o the table and negotiate, can you convince the children who run this city to behave themselves?"
