Damien/Monster

Damien is one of the commanders of the Black Mage, and the Demon's once-thought deceased brother. He also the main instigator of the events in Root Abyss.

Story
Many years ago, Arkarium was tasked to annihilate southern Minar Forest by the Black Mage. Damien was seemingly killed in the process, leaving a childhood locket which was found by Demon, Damien's brother. Demon was overcome with shock and anguish over his and their mother's deaths. However, despite his apparent death, Damien has become the newest commander of the Black Mage.

Damien was tasked to "take care" of the World Tree, the Transcendence of Life, who rests in the Root Abyss to recover her energy. To prevent her from restoring to her original form, Damien summoned the seal guardians, Von Bon, Pierre, Crimson Queen, and Vellum. These generals taint the Root Abyss with darkness, keeping the World Tree trapped within. They were all defeated by the Maple Alliance, freeing the World Tree. However, Damien indefinitely revives his generals, which threatens Victoria Island. Much later, Damien kills Shinsoo, the Divine Bird of Ereve, which was later resurrected by Cygnus.