Serrati Wyverns are a fierce breed of dragon typically found in volcanic areas or in desert scrubland. With their keen vision, these fearsome predators can pick out well-camouflauged prey from the slightest movement. They are named for the double rows of serrated teeth that line their beaks, which allow these wyverns to maintain an unbreakable grip on prey while they tear into their target with deadly hooked claws. Though these dragons are combative with nearly everything, they are surprisingly well-mannered when raising their offspring in communal nests. Males, however, tend to be chased off as soon as eggs are laid.

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.

A dragon of noble mannerisms and gentle mind, BootToTheHead (whose name is often shortened to Boot) is one of the calmer Seragamma Wyverns under Kim's care. However, he is also one of the odder ones because of a peculiar speech impediment of his.

This impediment is from an odd tick where he often winds up saying "boot to the head" in a very quick fashion when just trying to talk about the accursed footwear. Sadly, this impediment is also linked to some of his magic, and, as such, has caused a ton of headaches for those he's talking to or just barely mentions. In the most literal sense of the word. He often doesn't mean this to happen, however, and tries to stop it whenever possible (occasionally failing to do so and managing for someone to get hit in the head by a random flying boot).

Whenever he isn't dealing with his irritable problem, Boot can often be seen flying from place to place for reasons of hunting or his additional job as air mail carrier.