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.

Mugiwara Luffy was named after one of Firerubynat's favourite fictional characters; now Firerubynat wonders if that was a good idea, considering how this dragon's caring, carefree personality and straightforward, optimistic outlook on life seems to greatly mirror his namesake. As is typical of his species (and namesake), Luffy is highly energetic; he lacks the ability to stay still for even a short period of time, and can usually be found chatting with and occasionally pestering the other dragons on Firerubynat's grounds. He is also notorious for being able to hold his own in fights; he tends to charge head-on at his opponent before lashing out with his tail, initially shortening it on purpose, before darting out of his opponent's range and lashing out again, giving off an illusion of his tail 'stretching' to cover the further distance.