The Professor - Free model.

Gumroad link:
https://gumroad.com/jimmylevinsky

I designed and sculpted this character about 3 or 4 years ago and have now made a few new edits.

I made the original sculpt for pixologic during the beta for zbrushCore.
Later on I made edits in Zbrush 4R7 and one more time in Zbrush 2020.