Balloon Dragons are so named because they are filled with a gas that makes them almost lighter than air, similar to balloons. However, they are not prone to bursting, as they are covered in tough skin and can deflate themselves if necessary. In addition, they generally are slow moving. They use their gas bladders to float to the tops of trees, where food is more abundant. They can shift their weight from their backs to their fronts, allowing them to reach leaves and fruit.

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.

High Floater is the most childish member of Shield Tail and Dark Drakon's dragon herd. He is frequently found with the herd's hatchlings, performing crazy antics in order to entertain them. Unfortunately, these antics often get the hatchlings overexcited, which makes it difficult for them to get to sleep at night. This has earned the Balloon dragon the reputation of 'the herd's clown'. However, while High Floater has a tendency to be goofy and immature, even he knows when it's time to be serious and will always help protect the herd's hatchlings from humans who try to capture or harm them. High Floater also harbors genuine feelings for his fellow dragon, Lore Wing. Sadly, while she is likewise charmed by his goofy nature, Lore Wing is not aware that their feelings are mutual.