Terrible Terror
Appearance
Behaviour
They are also shown to be very mischievous. They often travel in packs, and they can be quite aggressive. They are also very curious creatures, and you may find them in places you would not expect them. In the first movie, and the Book of Dragons, they were shown to lick their eyes like some geckos do despite the fact that they have eyelids. Like every dragon, each Terrible Terror has its own unique personality. They also make a lot of noise, and can be very annoying. They are not picky eaters and will eat just about anything they can digest. Though they have very small teeth, they have strong jaws and can deliver a nasty bite. They also seem to be fairly easy to train.
Monstrous Nightmare
Appearance
Behaviour
By nature, the Monstrous Nightmare is fearless and proud. Nightmares are some of the strongest dragons around and they know it. They are extremely aggressive. In battle, they are the first to arrive and last to leave.
The best way to earn the trust of a Nightmare is simply to show it the respect it deserves. Placing a gentle hand on its snout and showing you are not a threat to it is the best way to go.
According to Gobber the Belch, the best way to engage a Nightmare is to clamp its mouth shut, leaving it unable to open its enormous jaws, much like a crocodile (however, the rest of the dragon is free to do whatever it wants). In Heather Report Part II, Snotlout revealed that the Monstrous Nightmare enjoys its horns being pinned to the ground, and Astrid was able to tame one by doing so.
Despite their name, Monstrous Nightmares are known to have a softer side. In Dragons: Wild Skies, their favorite food are scented flowers. In several points of Dragons: Riders of Berk, Hookfang occasionally dozed off or was distracted by butterflies or something else.
Typhoomerang
Appearance/Behaviour
Typhoomerangs are very large dragons; come in a variety of colors including blue, yellow, red and orange.
Fireworm
Appearance
Average
Queen
Behaviour
These dragons are often found in large groups. This makes them extremely dangerous. They are even remotely aggressive, occasionally clinging to potential enemies. Usually Fireworms make their homes in dark caverns. Fireworm Queens are very protective of their firecombs of gel and will chase down anything that tries to take it. As being a mother, the queen has devoted, discreet nature even on rage to take back her firecombs, and being highly intelligent as being capable of conjecturing the intruders’ motives and objectives.
Despite their aggressive nature (to protect their nests), they seem to know if another dragon’s fire is worn out, and are kind and sympathetic enough to reignite other dragons’ firepower with their venom (at least all species of Stoker class receive benefits).