N'Gasta is a pro in this area.
My friend has a Sandro model for Heroes 5.
The Randall model he made for his map is amazing!
P.S. I'm a complete newbie when it comes to modeling.
So, if there's a model, I can add the rest (animations, effects, special abilities, etc.) myself, but right now I'm busy with my Randall-themed project and don't have time for anything else - I just test my map sometimes.