Well... If you want your character to be a Vorox, then this is a must. It offers a great deal of background information (concerning the Vorox culture, their society, their homeworld (interesting stuff) and their role in the Known Worlds), but I think it lacks a bit of details concerning the Vorox themselves - specific information about appearance (things like size, weight - mostly detail stuff) for example. You'll have to use your imagination there for the most part, or use the numerous drawings in the book as examples/inspirations. Also, the "stats"-chapter is a tad short, so fans of statistics and numerical values will be a bit disappointed. Still, I find that these are only minor issues, since the most important part - fleshing out the Vorox race - was done well. A good buy.