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.

The younger of the two Auberon dragons, and a servant to the young Guardian of the Moon, Freya. Agua gets along very well with Freya, seeing as both of them are bubbly and playful. She is often found swimming around in a pond located right in the very center of the Fenrir Family's enormous garden, whilst still keeping an eye out for any impending danger. Agua does the six'o'clock patrol of every evening.