In contrary to everyone's assumed opinion, I actually enjoy the process of painting characters more than doing environments although my forté is the latter.
Characters are more challenging and you get to interact more emotionally with the subject matter.
I think mastering the human form is the highest goal of any artist anyway.
Doing environments seems pretty dull to me most of the time, believe it or not.
Anyway, this is some Irish celtic legend, the Morrigan or Phantom Queen. Not to be confused with the videogame character (?).