Horse Dragons have equine-shaped bodies and hooves instead of claws, which allow them to be fast runners. They specialize in running takeoffs, which are quicker than taking off from a stand-still. Horse dragons are able to stalk their prey from the ground then quickly execute an aerial attack for the kill.

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.

Applicative lives in the Pepper Falls cave network, where humans and dragons of all kinds are welcomed with open arms (or fins, or wings, etc.) as long as they don't cause trouble. After the initial review, outsiders will notice that "trouble" is defined broadly, so this society has been described with words like "quaint" and "reactionary". Applicative is a road and bridge tester throughout Pepper Falls and always does his work without questioning his superiors. He's neutral around everyone he works with but slightly dislikes his two colleagues who complain about their job. They should be thankful they were assigned a job. At twilight, Applicative likes to stand in one of the coastal forests, looking at the sky framed by treetops and digging his hooves in the soil. He talks in analogies a lot when he tries to explain difficult concepts, and he hopes that doesn't put anyone off.