Aww this is sooo cute! Hydreigon has always been a favourite dragon of mine ever since I evolved it from a Deino ^^ Heck I even have a hydreigon OC of my own since I love it that much xD
Personally though, I've always felt that hydreigon is one of the few pokemon who are misunderstood, just like grovyle or even gengar. I feel that these pokemon if looked upon a different way would show their nice side because I've always believed that they do have a nice side to them.
This is so cute! I love it! Most people would draw Hydreigon all mean and scary and tough. But not you! You drew him as really cute shy looking hydreigon! Which reminds of the hydreigon from pokemon mmd gates to infinity! Which is awesome!