Night Furies are generally jet black in color (though at least one female is white) and are small in size. Their wings are exceptionally large compared to their small bodies, enabling these reclusive dragons to fly faster, farther, and longer than any other dragon species. Night Furies have a pair of yellow or blue eyes, each with pupils that determines the Night Fury's mood: narrow pupils represents the Night Fury's aggression and anxiety while larger pupils represents the Night Fury's friendliness and docility. Night Furies also have two sets of sharp retractable teeth. Females lack the spines seen in males like Toothless. Like all dragons, Night Furies depend on their own tail wings for flight. If their tail wings are injured or missing, then Night Furies cannot fly. A Night Fury also depends on the dark-lit sky as cover when attacking enemies.The Night Fury is the fastest, smartest, and rarest of the known species of dragons, as Toothless might be the last known member of his species. It is medium-sized with a sleek, dark black body. It has faint lighter patterns similar to that of a panther across its body.
The Night Fury somewhat resembles a cross between a panther and an axolotl or a gecko in general appearance, has two pairs of wings with a shape similar to a bat, two mobile, ear-like appendages on the back of its head that show its mood and help it hear, and it has other pairs of these flaps around their jaw depending on their age. They also have a pair of large, yellowish-green, cat-like eyes and sharp retractable teeth. Unlike most dragon species, the Night Fury has a short neck and lacks any kind of horns. The dragon is about 26 feet in length.
In flight, the Night Fury's wingspan is unrivaled, measuring approximately 48 feet, making it resemble a plane. This allows it to fly faster, longer and further than any of the other dragon species. It uses tail fins on its tail to help steer and maneuver, similar to an airplane's rudder. However, a Night Fury will be incapable of flying if one of these fins is missing or destroyed which shows that they are also used for ballast in flight. It is also capable of taking flight from a standing start like a pigeon.
The Night fury has another unique ability; "Alpha Mode", which has only been demonstrated by Toothless upon his evolution into a Titan Wing Night Fury. When the Night Fury's 'Alpha' mode is unleashed, its spines, the ridge between its eyes, the inside of its mouth, and the nose glow translucent blue, reminiscent of the blue-ish plasma blasts it fires. When Toothless fires shots in this alpha mode, the now translucent blue parts of his body glow a little brighter. And as Toothless fires probably the most powerful shot he has ever fired, he glows extremely bright; upon firing his shot and slowly, the glow fades away afterwards.
Powers and Abilities
The Night Fury has the ability to shoot bursts of purple-colored flames, which are composed of acetylene and oxygen. This blast is referred to as a "plasma blast" by Hiccup. Plasma blasts explode directly upon impact, sometimes exploding in midair at higher altitudes because of the cut off oxygen supply. The Night Fury can fire at different levels of power, such as a blast weak enough to be deflected by a wooden shield, and a blast powerful enough to destroy an entire catapult tower or break the tusk off a Bewilderbeast. The shot limit for Night Furies seems to be the highest of any dragon; it can fire at least 21 shots. In Alpha Mode, its shot number appears to be limitless. These blasts can be fired with pinpoint accuracy. The Night Fury also has the habit to light and warm up the place where it will sleep. This fire isn't particularly strong, but is said to be incredibly hot, and can light up fireplaces, stoves and lamps. The flames and blasts are known as plasma because the heat created by the fire is hot enough to ionize gases produced by the flames. The fire has also been seen in a blue color and also to carry an electrical current. The Night Fury's plasma blast can sometimes be reflected off surfaces such as rock walls to stun targets. When combined with the electrical attacks of a Skrill, the resulting blast is enough to knock dragons from the sky.
Night Furies display a rare ability not seen in any other dragon; echolocation, often emitting what seem to be purple soundwaves to navigate in the darkest areas.
The Night Fury is the fastest known species of dragon living on the Barbaric Archipelago. It is even known to break the sound barrier. The only dragon species that can rival a Night Fury in terms of speed is the Skrill. Night Furies take advantage of their blazing speed to dive bomb opponents with a volley of plasma blasts.
According to the Dragon Manual, the Night Fury is considered to be so aggressive that it is likened to the "unholy offspring of lightning and death itself". Night Furies are generally very aggressive to any form of threat they find, similar to how the other dragons treat the Vikings of Berk. But they are also curious creatures that attempt to understand new things they observe and are intelligent enough to attempt to recreate the actions that they see. Night Furies, in comparison to most other dragons, are very capable of communicating, and seemingly understanding human speech: the best evidence of this is when Toothless makes a noise in agreement with Hiccup regarding the fact that the Red Death can fly or when Hiccup orders Toothless not to kill Astrid and Stoick. They are, however, fiercely loyal and protective. Once a bond is formed, it is close to unbreakable.
Night Furies are piscivores, eating only fish as opposed to other forms of meat. A Night Fury will use its teeth as makeshift fishing hooks to grab onto prey before swallowing it whole.
Night Furies are extremely loyal to their Riders but it comes to a point that they become overprotective and suspicious of random strangers. Night Furies can 'sense' when their Rider needs them and then nothing can stop it from getting where it needs to be. Although Night Furies don't talk, their Riders usually know what's on their mind and what they're feeling. Night Furies are extremely picky eaters, so look out! Flaming food flies fast! And even though Night Furies are one of the cutest, most loveable, most loyal dragons (The most loyal are the dragons) on this earth, that doesn't stop them from being terrifying on the battle field.
The Night Fury also is exceedingly strong in combat. Toothless was able to defeat the Monstrous Nightmare Hookfang directly in combat, and went on immediately afterward to fight dozens of Vikings before subduing Stoick the Vast, nearly killing him until Hiccup ordered him to stop. It has also been shown that Toothless strong enough to carry a dragon the weight of a Monstrous Nightmare and best Whispering Deaths, and a Triple Stryke in combat, something few other dragons can do.
Night Furies are the fastest dragons, and can fly fast enough to break the sound barrier. Their sleek, streamlined shape cuts down on wind resistance, as does their lack of horns and spikes. The fins on their back, which can split down the middle, are valuable in adding to their maneuverability, as they increase speed and the ability to make tight turns. The dragon is also incredibly stealthy; thanks to its black coloration, it is nearly impossible to spot in the night sky, only briefly revealing itself upon attacking due to its plasma blast. Only the Skrill and Shadow Wing dragons can match a Night Fury in speed.
Additionally, the Night Fury is intelligent, possessed of impressive stamina, and has excellent senses of hearing, smell, and sight. Their jaw pressure is as strong as that of 12 great white sharks, and they have a good swimming ability, though they are not immune to drowning. Able to understand most things said to it, the Night Fury also has can learn to mimic human actions and are expressive and open with their emotions.
The only weaknesses Night Furies possess are that if their tail fins are damaged, they cannot fly. They are also susceptible to dragon root, allergic to eels, can be poisoned by blue oleander flowers, and are affected by grimora parasites.