Once a feared dragon, Toothless (the only known Night Fury), was the first to be trained. Years later, Toothless would become the Alpha of ALL Berkian dragons. Highly intelligent, fiercely loyal, and ferociously loving, Toothless is more like family than friend.
Once comfortable, Toothless is intensely playful, behaving more like a critter than a killer. His intelligence and empathy also appears to allow a degree of creativity, as shown when he mimicked Hiccup’s drawing. He even got upset when his “art” was stepped on! A dry sense of humor, big heart, and a winning smile make Toothless and Hiccup mirror images of each other, and they are rarely out of each other’s company.