Monster Construction System

From the introduction:

Throughout the Final Fantasy series, monsters and the villains often played a role as equally important as that of the heroes themselves. What would Final Fantasy VI be without the antics of Kefka and Ultros if they didn't try getting into the Returner's way at every possible chance? The Monster Construction System gives gamemasters the chance to create their own memorable monsters to sick on their players - from gentle Rabites to fearsome dragons of the worst kind. If you have an idea for it, the Monster Construction System can help make it a reality.