Paladin

The Paladins are human mages who have been bestowed with purified devils by Lucius Zogratis.

Overview
As part of his plan to bring about world peace, Lucius Zogratis has developed a method of using his Soul Magic to purify devils and their power, thereby creating a holy power, and to incarnate those devils in humans, transforming them into new lifeforms, which he calls "Paladins". Additionally, he plans to rule over this world as the "Magic Great Emperor" (魔法大帝).

As part of the transformation, Paladins receive winged, luminous bodies with halos and horns. Because they are hosts of incarnated devils, Paladins possess immense magic power, nearly immortal bodies, enhanced wisdom, and their devils' magic attributes. Since the process alters the humans' souls, their grimoires are similarly affected, recording these new spells.

Trivia

 * Paladin are twelve fictional knights who served the Holy Roman Emperor in medieval literature.