It's a great series. The gunslinger is ONLY in Disgaea 3, but sadly in my opinion that's the worst of the series. I recommend Disgaea 2 (Playstation 2 and PSP) or Disgaea 4 (Playstation 3) for new players, personally.
Nicely done. I particularly like Vinyl's expression that comes through her tinted glasses. It really adds to the overall image of the piece, not to mention the shine, shading, and the great costume work with the bandolier and her hat flying off, signaling like she's prepared to attack with an air of confidence she'll easily win.