Father Rhinehardt from "Betrayal at House on the Hill"
As the oldest character, I added some more wrinkle detail to his face, and based his appearance on the actual character figurine. It seemed a bit odd for someone to wear a priest's clothing and a labcoat, but I think Rhinehardt here rocks it. Added the book and the lantern to supplement his facial expression, which for someone who fears madness, fits well.
Critiques are welcome, even in comment form. I'm seeking to improve!