They could speak using telepathy and it would go through and explain why dragons no longer exist on earth. Like they had to travel back to their original planet or they could no longer stay on earth because they were being hunted. And that's why there's no dragons left in present day. But some humans knew their story and knew they left for the stars, so that's why they started calling the constellation Draco.



It would be one of those plots where they come across really scary and dangerous, but then there's a twist and it turns out they were being misrepresented. Because of course I want them to be good in the end.