Feisty and energetic, Whiptail Dragons pride themselves on their speed and agility. It is not unusual to see several whiptails racing each other. Though fragile, they can easily evade attacks with their superior speed, and often use their long tails as a weapon, giving rise to their name.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Despite needing lenses to see, Therm attracted her mate Sun Warrior the Dangerous by her speed and her inability to give up. Sun Warrior's father, Sun Devil, believes her vision problem can be bred out, and the speed she can offer the family out weighs her need for the lenses. Unfortunately this increases the need to separate more from the main cave, and Sundevil knows that means finding a dragon who can craft lenses for Therm the Quick.