Griffin wrote:
Do only the fire dragons breath fire?  They sound very interesting.  Do any species tend or to good or evil?  Are they mortal, even the star dragon?  Has there always been only one star dragon?
The dragons and the vaeances both breath fire, though the vaeances in smaller qualities and less often.
Water dragons are all evil; I know not of a single exception. Fire dragons are like horses in that they are evil depending only on the side, and as the most common they are the ones most frequently found in armies. Air dragons pretty much do not exist, they haven't done anything important in recorded history for many ages. Anyhow their morality is only personal choice, no tendencies. Earth dragons are reclusive, so they are bad in that they don't do anything good for a long time as a nation, but I'd say they tend toward good. The Star Dragon is in some ways proud and aloof, but is definitely on the good side.
All are mortal. Some, those of the first few generations, have no biological limitations on life-span, that is, they don't age, but even they can be cut down by weapons or magic. The later generation dragons do age and eventually die.
The Star Dragon does tend to seem immortal though. This is because, as the first generation dragon, he does not age, and he is so powerful anything killing him would be amazing. He has existed as long as the world, so he is in that sense immortal as well. If my current views of history are right though, he will die eventually.
Has there always been one Star Dragon? Well, he is the only dragon of the first generation. He had no offspring; the second generation was created and he is called "first generation" mostly as a title. Thus, the first generation dragon was pure star, mastering all of them. The second generations were all star but generally leaned toward one of the other elements and not-so-much towards others. Examples are Blurin the Water dragon and Kion's unnamed father the fire dragon. Blurin is the only second-generation dragon remaining to history and he was corrupted so that he no longer knew Star crafts, and thus was not star anymore. So, in a way, there were at one time other star dragons.