The Corruptor is a dragon-like being that has the ability to spread absolute corrupting darkness everywhere she goes. Some lands must be subject to corruption and decay, so that other lands can flourish – and The Corruptor is the one who enforces this law of nature. She feels no joy from her actions, and simply sees them as a duty.
Occasionally, certain people or places turn out to be immune to her powers. The Corruptor just comforts and leaves them be, happy that she can spare something.