Well the original concept was for him to be sort of a exorcist in a sense for when a demon shows up in the Empire, but also he works with devils. Again I was originally basing thus all off the little description in the Chelaxian pathfinder companion about wizards in Empire but I was also intrigued by the concept of playing a this kind of character after playing a particular pathfinder mod where demonology was mentioned.
Set though pretty much pegged it cause in an essence that was what I was visualizing, binding a demon to perform a task on behalf of Hell or else suffer until it submits.