Mana Walker

He appeared early on as a figure deeply connected to the protagonist, Allen Walker.

For Allen, he was the person who taught him the street performance skills that became his livelihood and gave him his name, making him essentially a foster father.

Although the cause remains unknown, his death led Allen to accept an offer from the Millennium Earl, resulting in the man's soul being summoned back into an Akuma. Allen acquired the pentacle-like mark on the left side of his face because, after transforming into an Akuma, the man struck back and slashed Allen's face just as he was being destroyed by the activation of the Innocence in Allen's left arm.

While he was described as the "14th brother," the reality of the relationship was far more complex. The Earl of Millennium—who once possessed a youthful appearance—found beauty in a particular scene within the world he sought to destroy, and subsequently vanished. Left behind were the Earl's former attire and the twin brothers—[Nea](https://anilist.co/character/36616/Nea-D-Campbell) and Mana—who were, in fact, the Earl of Millennium himself. As Mana grew, he attempted to carry out the mission of destroying humanity; in the process, he destroyed his own face—the face of "Mana"—resulting in the Earl of Millennium taking on his current appearance as a middle-aged man.