Night Terror

"It's not one big dragon, it's tons of little ones!"

- Hiccup Haddock III discovering the Night Terror flock. The Night Terror is a small Stoker Class dragon that flies in overwhelmingly large packs which appears in the series Dragons: Race to the Edge.

Appearance
Night Terrors are small dragons that are slightly larger than the Smothering Smokebreaths and the Terrible Terrors. Each individual Night Terror is black in color, except for the alpha. When they group together, especially at night, they appear to be all black in color and they form the shape of any large dragon. They have small teeth and a rounded tongue. They have two small horn-like ledges on top of their nose. They also appear to have a short tail with four, short, thin spikes on the tail.

The alpha is white and slightly larger than the others. It appears as an eye of the large dragon shape in the swarm.

Behavior
Because Night Terrors have a bit of the personalty of bats, they fly as a colony and are nocturnal. They also have a great respect for their Alpha.

Flying Together
Night Terrors are able to fly closely together in order to form the shapes of larger, more terrifying dragons for protection. This behavior resembles that of certain schools of fish, who swim together in order to appear larger so as to scare off predators. Also, each swarm has an alpha. The alpha is able to control its fellow dragons and instruct them to form certain formations. They have been shown forming a Night Fury, Fireworm Queen and a larger Night Terror.

Speed
Night Terrors are incredibly fast and strong fliers, especially when they are together in a swarm.

Dragon Controlling
The alpha Night Terror can control smaller Night Terrors, organizing them into a formidable flock that appears to be a larger dragon when posed with the threat of oncoming predators.

Fire Breathing
A single Night Terror breathes an admittedly tiny fire blast. However, when a swarm of these dragons fires, the little shots can turn into a massive fire ball.

Intelligence
They are able to form the shape of other dragons, making themselves look bigger. They even figured out their own way to get rid of the Fireworms by forming themselves into the shape of a Fireworm Queen. It is possible they had never seen a Fireworm Queen before, but they had the idea to make themselves look like a large Fireworm, hoping they would be followed by the smaller Fireworms.

In Race to the Edge
In When Darkness Falls, the gang found a new island to call their own outpost. That night, Tuffnut wakes up in the middle of the night to see a gigantic dragon. They decide to chase down this mysterious dragon and eventually, find out that the dragon is not a 'dragon' but 'dragons', tiny ones forming the shape of a larger one. They capture the leader and named it 'Smidvarg' and the species 'Night Terrors'. That night, Changewings attack the Night Terrors. They quickly release Smidvarg so that he can command the Terrors to form a larger dragon to scare off the Changewings. Eventually, the riders decide to share their island with the Terrors.

In Gone Gustav Gone, Gustav was harassing Smidvarg and the gang. When Hiccup settled them down and sent Gustav off, Smidvarg roared angrily at him.

In Reign of Fireworms, the Terrors saved the island from migrating Fireworms burning it to ash. The Terrors form the shape of the Fireworm Queen to draw the Fireworms away onto a barren island, where they have nothing to burn.

In Edge of Disaster Part I, Astrid catches the twins playing with Night Terrors even though they were supposed to be on duty Tuffnut taught them to fetch sticks, which Hiccup failed to understand how that skill served in battle. In the second part, Ryker shot down a Night Terror on guard with a poisoned arrow.

Known Night Terrors

 * Smidvarg
 * Seedling Night Terror
 * Nightwatch

Titan Wing
Source: Dragons: Rise of Berk

Titan winged Night Terrors have grown larger and their main body remails black while the horns and the end of their tail become blue. The ledges on top of their snout is longer and more wrinkly. Blue horn-like structures grow out of their neck and head and their claws grow sharper. Also, their whole tail is longer and apears to be sharper.

Weakness
Night Terrors are incredibly weak on their own, as they have very small fire blasts, not much strength and are very scatty and jumpy without their leader, so by capturing the Alpha Night Terror you could probably take down the whole flock.

Trivia

 * Originally, Tuffnut wanted to call the dragons "Smidvarg and the Gang".
 * The Alpha (white) Night Terror is named Smidvarg, which was given by Tuffnut, which corresponds to the name he wanted to give the dragons.
 * Their ability to fly in a large group is similar to Scarers.
 * The Night Terror is nocturnal in nature because its disguise as a larger dragon would fail if the predator saw the white of the Alpha and the outlines of all of the other Night Terrors in the daylight.
 * Night Terrors are often used as sentries on the Dragon's Edge because, although they can be quite stubborn, if properly trained, they remain loyal and excellent guard dragons. They can swarm together in order to scare off either predators or villains away from the Dragon's Edge.
 * According to Rise of Berk, Night Terrors are extremely elusive. This may be because of their skittish tendencies and the fact that many a Viking could be scared off by them while thinking they were a larger dragon.
 * The Night Terror is the third black dragon to be seen in the franchise after the Night Fury and the Sword Stealer. Though they also appear dark green in Rise of Berk.
 * Night Terrors are very similar to Speed Stingers.
 * Both hunt in packs.
 * Both are led by a leader.
 * Only the lead dragon has a distinct appearance.
 * They are both nocturnal.
 * Both can move extremely quick.
 * Both don't know what to do without the leader.
 * The Red Death's roar was reused in one of the Night Terror's roar.
 * Its tail looks loosely similar to that of a.
 * The design of its head (not counting the horns) looks like the head of a parrot.