Waterhorse Dragons received their name due to their horse-like physique and endearing behavior. They are capable of surviving out of water, and when on land their skin secretes a gelatinous goo to retain moisture. However, their large paddle feet are better suited for swimming, and waterhorse dragons tend to move very awkwardly when on land. Waterhorses are very friendly dragons and enjoy playing with humans.

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.

Water of Playfulness is a considerate and, as her name suggests, playful dragon. She spends her free time in her lab and with her parents. Quality time with her dad involves swimming, getting food, uttering random statements, and wondering why dragons in her paternal grandmother's side of the family have such strange names. Quality time with Water's mom involves daydreaming and looking for Daydream Dragon signs on her even though she's never successful. She is currently very happy with her life.