Head of Diablo, the Prime Evil, aka the Lord of Destruction.
That's a fanart creation and as such isn't a blatant rip-off of any existing picture or sculpture. But I think I got the likeness.
This one is waiting to be printed.
If you do before I manage to schedule in a decently large print, post a make!
ZBrushCore + Blender
Just sculpting, then decimated to managable size.