The rise of mortal villains

When the Cartoonian Wars began, Chernabog realized that he would have to gain soldiers for his armies. So, he began contacting many a person with a dark heart to gain power in exchange for servitude to the darkness. All of them agreed, and they either became evil sorcerors or dark overlords. But the common trait they all had was that they were all mortal and could be killed at any point.