Night Terror (How to Train Your Dragon)

While these nocturnal, bat-like dragons may not seem menacing on their own, Night Terrors are a formidable force to be reckoned with when united. Night Terrors are incredible fast and strong fliers and their ability to take the form of a larger dragon makes them a great threat to potential predators. As a result, they are quite useful as sentries of Dragon's Edge. Similar to other dragons who travel in packs, the Night Terrors respond to an alpha, a slightly larger white dragon who is leader of all the others. Without the alpha, the strength of the Night Terrors is lost and they become easy prey. [src]