Dragons in The Dragon Ambassador

I wasn't paying attention to the world around me today because I was tired, and while I was zoning out, an idea came to mind, and from that idea, I solved a lot of the problems I had with my novel. These are some of the notes I've made so far for The Dragon Ambassador.

Every magical race has a defining characteristic and an antithesis race. The antithesis race’s defining characteristic is the opposite of the other race. An example would be that Dragon’s characteristic is courage, thus their antithesis, the Shadow Serpent, are creatures of fear. In general, there is a race with a good characteristic and a race with an evil characteristic. There are exceptions, like Elves, who are creatures of boredom, and their antitheses, the Sugar Imps, who are creatures of Excitement, neither of which are evil.

Dragons:
Antitheses to Shadow Serpents, Dragons are beings of courage. They will never run from any situation and will often charge headfirst into them. Since they are huge fire breathing lizards, this caused some misunderstandings and humans came to fear dragons. They can only communicate with other beings that have an equal measure of courage, something that is very rare, and so they had almost no way to communicate with the people who were hunting them down. Often, if there was a human courageous enough, they would be hunting dragons instead of trying to listen to them. Hunted nearly to extinction, they went into hiding until there came a day that an ambassador could be found to speak for them.

Shadow Serpents:
Antitheses to Dragons, Shadow Serpents are beings of fear. They are constantly in hiding from the rest of the world. They stick primarily to the shadows, and as such, their eye sight has diminished, but their other senses have increased. They magically hold shadows to themselves, so that if they should venture into the light, they are surrounded in blackness and no real detail about them can be seen. They are shaped similar to dragons, but it is unknown how far the similarities go. Because of their extreme fear of everything surrounding them, they have developed a hatred for most things, but they are too scared to do anything about it.