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.

While Neilidar is very friendly and enjoys the company of humans like his species; however, he is very shy and thus tends to sit back in the water while his friends and family are playing with the humans. When he hides, he ducks under the water, and so he becomes more jelly-like and moisturized than the others. Because of his high amount of moisture, he is considered to be one of the more handsome Waterhorse Dragons around—as the more moisturized and jelly they are, the better. Except he's still shy.