Gray Fullbuster is an ice mage of Fairy Tail and he joined the clan after his mentor, Ur was "killed" by Deliora. There's another side story about Gray's life, Koori no Kiseki where it tells about his journey in getting into Fairy Tail.
As said above, he joined Fairy Tail after his mentor, Ur used the spell iced shell, resulting in her body turning into ice. Gray encountered Lyon Vastia on an island, who was trying to resurrect Deliora, to prove he was stronger than Ur, whom could not beat the demon.
Behind the scenes Edit
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