Anankos

Anankos (ハイドラ, Hydra in the Japanese version) is the true antagonist of Fire Emblem: Fates, revealed in the game's third route.

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The dragon of the hidden kingdom of Touma, he has a hatred of people and inflicts pain on them due to a forgotten debt of gratitude. During the first two routes of the game, he poses as the sacred mystical dragon of Nohr and controls it in secret through his familiar, who is disguised as King Garon.

He is revealed to be the true father of the Avatar.