Fafner (ファフナー, Fafunā) is a God Warrior and scientist Yggdrasill. He is the most cruel of God Warriors for their experiments with the citizens of Asgard. He fought against me in the Yggdrasill, while searching for a "perfect specimen" for his experiments, after that kidnapping Helena and her younger brothers, but is foiled by Pisces Aphrodite, after that, he was assigned to protect Svartálfaheim and had his last battle against Cancer Deathmask. He is currently on the Yomotsu Hill.

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