The Complete NPC

Publisher's blurb: Generate unplanned NPCs quickly! Players are continually encountering NPCs you never planned for, but now you can combine almost anything quickly to create the NPC you need! For each NPC you painstakingly create and detail, you will need at least ten more, for which you never planned. If your players have one superpower, it is to go completely off-script and end up in some corner of your world you never designed, fighting things for which you never made statistics. But with these guidelines, you can quickly combine any race with any existing NPC.