Asurei Rune

アスレイ・ルーン

[Spoiler] Asurei Rune, revealed to be Supporter X and Fei Rune's father, was before an officer of El Dorado. However, because of Fei's birth, he became afraid of losing his position and had to abandon Fei, though he gave a gift to him, a bunny plushie toy that later resembled Fei's keshin. During several years, Asurei grew worried about Fei, and when he joined Feida, he approached the organization as Supporter X. (Source: Inazuma Eleven Wiki) [/Spoiler]