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.

Hakeguchi is a water horse dragon that is as tough as he is playful. Hakeguchi spends most of his time fending of human invaders who over fish the seas. Being extremely conscientious about the welfare of the oceans this dragon spends most of his time cleaning up any trash or pollution that humans dump into the ocean. Unfortunately, that leaves Hakeguchi with little time to socialize. His only real friend is Sanataro, the Guardian dragon, but Sanataro spends so much of his time protecting innocent people that the two rarely have a guys' night out.

Overall, he's a wonderful person to be around when he isn't working, but because his job is so important to him its difficult to get his attention.