Voice Actor: Crispin Freeman

Amon is twenty-five years old, and the leader of STN-J's witch hunting division. He's deadly serious and seems quite cold more often than not. As the series progresses, there are times when you may question whether he is an ally or an enemy.

Amon harbors bitter feelings towards witches even though he himself is a seed. Those feelings date back to his youth when the kind mother he once knew was lost after her powers manifested. Prior to that, she was a loving parent. Amon has an older step-brother (Nagira), who becomes a pivotal part of Robin's life after the attack on STN-J.

Amon was dating Touko, the only daughter of Zaizen, until he found it difficult to concentrate on his hunt cases. Afterwards, he told her they could no longer see each other.