Toothless is the Night Fury dragon from the How to Train Your Dragon franchise. He is known for his stealth, speed, and agility, which are all made possible by his unique tail. Toothless' tail is shaped like a fin and is covered in small, sharp spines. The spines help to create lift and control, allowing Toothless to fly smoothly and precisely. The fin also acts as a rudder, helping Toothless to steer and maneuver. A fanart How to Train Your Dragon Toothless Tail Sticker.