Blueberry

Name: Blueberry 'Blue'.
Species: Skybiter
Class: Feathery Class
Gender: male
Color: various tones of blue, mostly moderate sapphire blue scales, mixed with persian blue and darker tones, and light icy blue. Moderate green eyes.
Height: 17 hands
Length: 2 Mt
Tail: 5.30 mt
Wingspan: 5 mt
Rider: Nora
Personality:Blueberry is often a calm individual around strangers, but when around his rider Nora he is playful and affectionate. Blueberry has a small check of vanity in him as well; he has a very rare color and he knows it. He doesn't let all the attention and fame go to his head, however, since Nora always keeps him in check about it. 
His favorite namesake food are blueberries, and will do nearly anything for them. Once he sees a basket full of blueberries, you can't stop him. But like all Skybiters, he enjoys a few black oak nuts every now and then. Blueberry is very curious and will try to understand things he can't understand. He is very social and doesn't like to be left alone for long periods of time. 
Blueberry has a darker side, however. When his rider is in danger, he is ferocious and merciless, and won't hesitate to kill if he needs to. He doesn't like strangers at all unless he sees them worth of trust. Blueberry rarely disobeys, but when he does, it's for a very good reason. If you get his feathers dirty, get ready for the worst bite of your life. 
Abilities:Blueberry is both a capable fighter and a lethal flyer. Nora has claimed he can catch bats in mid air without a drop of sweat. On the ground he is equally dangerous, using his feathers to confuse enemies and swipe them away like a broom. Blueberry is able to speak a few words, such as 'hello', 'don't bite' (he learned this one when Nora was first training him, and often told him not to bite), 'no', and 'mora' (as he calls Nora).

Story
Blueberry was born in the tropical jungles of South America. His flock lived near a Tribe of dragon riders famous for taming Skybiters. As a hatchling, he fell off from his nest, and would have died hadn't a young Nora helped him back up. Blueberry remembered the girl that helped him that day, and when she became old enough to tame a dragon, he chose her. 
When the Tribe was attacked by a rival tribe, all villagers fled with their dragons, but Blueberry and Nora were separated from them during a hurricane. To enworse things, Blueberry landed on Berk and Nora was rescued by the Outcasts (about two months after the second season of the series ended). Hiccup and Toothless found Blueberry with a hurt wing in the forest, but the Skybiter was trapped in the cove and couldn't fly away from them. 
The dragons riders tried to earn his trust by feeding him, but he wouldn't eat anything they gave him. It wasn't until Stormfly brought him some wild berries found in Berk that he ate. Still, he wouldn't let any of the humans to get close to him. Hiccup was excited to have discovered a new class of dragons, and tried to learn as much as he could about Blueberry. A few days later, an Outcast ship docked in Berk, bringing Nora with them. She called out for her dragon, and this time he heard her. Blueberry had to accept Hiccup's help to get out of the cove, and then he rushed to meet with his rider. Nora and Blueberry then decided to stay on Berk while they found her tribe.

Relationship with Rider
Nora and Blueberry have one of the strangest relationships in the world of dragons and riders. They have known each other since childhood, and have grown very close. You could say their relationship is like that of Hiccup and Toothless, but taken to the extremes. Blueberry sometimes brings Nora blueberries, and will chew them for her; she eats them without hesitation, and while some would find this repulsive, she claims it's a way Skybiters bond with others of their kind. Nora adores her dragon and talks to him like he were a human, even guessing what he means to say. Blueberry is a little older than her, and so he acts like somewhat of a big brother for her. So close they are, that they can communicate with only body language, and Nora is able to walk on top of her dragon's back while he is in the air.