What I liked about the original Forgotten One was that it looked like a creature of pure pain and torture. Almost like something from Clive Barker's mind. I giant skinned, hanging torso, suspended by large meat hooks, rotting giant maggots, exposed organs, blood flowing spilling out like water, with an S&M torture mask on it's large head. Then, finally revealing it's face, it's a giant rotting demon face.
I still think this Forgotten One looks like FFXII's Chaos:
