Considering that most of your renders were done using either Mike3, Maximus Whatsisname, and Hiro, I'd say it's a parmutation of one of those three.  Seeing how you've made a Snape from both M3 and Maximus, who looks a bit like the figure above, I'd tend to rule out Hiro.  From the broad forehead, and high cheekbones, I'd say it more resembles M3 than Maximus, so I'll go with M3.
David P. Hoadley

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