Charon- the ferryman Picture

This was done for the Gnomon image competition for this month. The theme: The ferryman.
I knew right away what kind of look i wanted. I knew that most artists portray him as a grimm reaper sort of character and I purposely steered away form that look. I wiki'd charon to get some info on the guy and then went on to develop my interpretation of him. It's not very clear as to why he's the ferryman. (or maybe i didn't do enough research) did he choose to be or was he given no choice? i decided to make him a tortured slave who will spend eternity bringing souls to the underworld.
critiques are welcome
Hades Lord of the Underworld
A View from Yggdrasil
Charon- the ferryman
Lethe
Raven Lamia