Toothless

Toothless is a nightfury, the strongest and most intelligent of all dragons. He is Hiccup's companion and best friend, as well as his main protection and transportation.

Appearance
Toothless is black with purple tones. Unlike other dragons who are spiky and reptillian, toothless is sleek and feline. He has two gigantic black wings as well as two smaller wings behind them. His tail has two fins, one on each side that help him fly, though one is artificial. He has two gigantic eyes on the front of his face that are immensly expressive, being able to become slits like a hunting cat, or widen into saucers like a puppy.

Personality
Toothless is the most intelligence of all dragons. He seems to have a dry sense of humor matching his rider. Such instances include shrugging his shoulders at the threat of Astrid telling the village about him, and taking her on a roller coaster ride rather than depositing her safely on the ground like hiccup wanted. He understands human speech extremely well, immediatly evening out his erratic flight when he hears astrid apologize, and having a look of pleausre on his face when he see's she has come around to the dragons.

Abilities
Being a dragon toothless has the power of flight and to breath fire. Being a night fury, he is the fastest dragon being able to fly at almost supersonic speeds. Being a dark black he is invisible at night. His most powerfull ability is to fly high, and tuck his wings into a dive bomb, letting out a blast of extremely powerful fire strong enough to knock the red death off it's feet. This dive bomb generates a shrieking sound, letting those unlucky enough to be it's target when to take cover. Since losing one of his tail fins he has had to rely on a special prosthetic created by hiccup to fly, with hiccup contoling it, though he prefers this. It may be that with Hiccup helping him Toothless can fly better than he ever could on his own.

Relationships
Hiccup Horrendous Haddock III: Hiccup is Toothless's rider, compantion, and best friend. Hiccup is the one who shot toothless down and wounded him, though toothless doesn't seem to be aware of the fact, or if he does, has forgiven him. Toothless values Hiccup above all others, protecting him from any percieved threat. Toothless is dependent upon Hiccup for flight, and seems to prefer this to any other alternative, as shown in the gift of the night fury when he smashes the fully functional replacement that allowed him to fly on his own and had Hiccup use the old saddle, showing that he flies with Hiccup, not just carries him like other dragon's and riders.

Jack Frost: Jack and Toothless have little contact other than through Hiccup. The only thing the dragon and the winter spirit have in common is that both fly.

Merida DunBroch: Toothless shares a light bond with Merida through Hiccup, and the fact that Merida has an affinity for animals through her own horse. In fiction she is most commonly the one who rides toothless behind hiccup.

Rapunzel: Similar to Jack toothless has little interaction wtih Rapunzel. The closest interaction they have would be Rapunzel offering to heal Toothless tail.