Dragons as baddies
(As long as I am still on site, I might as well toss in another comment.)
Dwarf, 18 F 02, suggests having dragons as the ultimate baddies.
I find that a bit too Eurocentric! In the orient, dragons are very beneficial, controlling the rain, among other things and it is best to be on good terms with them.
Mythworld, among other games, is far more open about this. Almost any species (even on very rare occasions chaotics, that being their chaotic feature) can be good or bad. Not only is this more true to the nature of reality, it gives the players something else to worry about when encountering anything.
One of the best examples of a beneficial chaotic was in the late lamented RuneQuest. There was a goat-headed humanoid whose species religion involved the spreading to disease. Yet their was one famous broo who was a noted healer.
This uncertainty, combined with making some encounters essential to the success of the mission, both makes the players think and prevents the "shoot first, question later" of the worst of hack'n'slash. All in all, making a better game.
When convention players ask about dragons in Mythworld, I always tell they they could be either, but in any case, more intelligent than humans and more powerful than most species. In the scenario involving dragons I sometimes use at cons, it has made for a far better game than if they were assumed dangerous.
Paul Cardwell