I'm a big fan of this series. The characters are unique and well detailed, and there is an incredible amount of story-rich material packed in just a few pages, with a high-quality piece of character art to top all of it off. Lisonnel is a beautiful elven temptress with a lot of secrets to discover. Obviously she's designed for fantasy campaigns, but her personality and history could be used for a character in any kind of setting.
This product is systemless, so that you can use it with the RPG system of your choosing.