Master: Will be virtually ignored and avoided by Pestilence on many occasions, and confided in at others. Will have to be a schedule-keeper for Pestilence, keeping him informed on the world population and disease research. Will be made sick often, will be made to act as a servant at times. Gifted with rapid healing and empathy, because they'll need it.

Apprentice: Remember how Pestilence ignores and avoids the Master? Well, the apprentice is virtually nonexistent in his mind. Worked like a servant, a dogs-boy, more useful to the Master than to Pestilence. Gifted rapid healing because by God they'll need it too.