This is my own sculpt using the concept art from book 2. It is not an official Wyrd sculpt. Now if Nathan wants to make it official I would be honored, but it would need some cleanup work before being cast. I did want to meet him at GenCon.
As to the question of what was the base model. This is a complete sculpt built on a wire frame. I used Green stuff and procreate to sculpt the mini.
Dave