The concept I wanted to go with is a sort of necromancer-meets-Frankenstein character- the idea is that he was an alchemist trying to complete the Flamels' recipe for the Elixir of Life, but after he suffered a fatal accident, he had to use the products of his various half-completed research projects to preserve his life. So, basically, "alchemically-enhanced lich" is what I was going for. Does that sound like it has potential?