Mercphobia (the Water Dragon God)

The "water dragon" in Fairy Tail most commonly refers to Mercphobia, the Water Dragon God, or the Water Dragon Slayer Magic. Mercphobia is a powerful dragon who was once cruel but became more apathetic and neutral, and is one of the "Five Dragon Gods" from Fairy Tail: 100 Years Quest. Water Dragon Slayer Magic is a type of Lost Magic that allows a user to manipulate water for powerful attacks and to heal by consuming water, with a natural advantage against fire but weakness against lightning. Dragon Form: Mercphobia's true form is an enormous, azure-blue sea serpent. He has a scaly grey unde...