Mercphobia, also known as The Water Dragon God is one of the Five Dragon Gods that inhabit the continent of Guiltina. He is a calm dragon worshipped as a god by the people of Ermina, although he can easily become hostile towards those he views as enemies. Conversely, he is quite welcoming towards the town’s visitors or those who have earned his trust. Mercphobia takes responsibility for the care and well-being of the citizens of Ermina, presiding over them as a benevolent ruler while also driving away any threats to himself or the town. Due to his growing frustrations about his powers’ threat to Ermina, however, Mercphobia constantly worries for the citizens’ safety and considers himself a danger to them. As such, he has become unafraid of death. He is also particularly dedicated to his assistant, Karameel, who he states is his “reason for living.” Despite his kind-hearted nature, Mercphobia acknowledges his cruelty and violence as the Water Dragon, admitting that he previously thought of humans as comparable to ants Because of this, he regards himself neither good or evil, although he openly supports dragons' coexistence with humanity. Mercphobia existed as far back as the Dragon King Festival, having killed numerous humans. He, along with the other Five Dragon Gods, fled to Guiltina in order to escape Acnologia and became known later became known among that moniker of "gods". After some time, he rescued Karameel, a human who had been shipwrecked in his sea. From there, Mercphobia became a peaceful dragon who supported coexistence with humanity, ultimately coming to lead the people of Ermina Town.