He is only known as the professor and beyond that he is only known for his crimes against humanity that occurred in Sioux Falls, Idaho. The Rocky Mountain Marshals have been hunting him for many years despite leaving their jurisdiction in the United States North West. The professor is currently hiding somewhere in New Orleans while investigating the secrets of Voodoo.

UPDATE
Luther recently closed in on the elusive Professor at the Aeon Institute. It appear he works with Dr. Conrad and the Aeon Institute and was in NOLA to help him gain access to voodoo to help with his experiments.

Luther , with the help of his friends and allies – The Crescent City Cavaliers – managed to mortally wound him. However he did get away.

It was also discovered that his name was Igor, yes the same Igor from the Frankenstein stories.