Felix Argyle (フェリックス・アーガイル), commonly known as Ferris (フェリス), is Crusch Karsten's knight. Debuting in Arc 3, he played a rather vital role as Crusch's knight and supported Subaru in his fight against the White Whale and Sin Archbishop of Sloth.
Divine Protection (加護, Kago): Ferris has the Divine Protection of Water (水の加護, Mizu no Kago), which makes him highly skilled at water magic.
Magic (魔法, Mahō): Ferris has extraordinary power and talent with water magic thanks to the combination of his bloodline and his Divine Protection of Water.
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