Demon Troy

Troy Mariner (Demon) was an unnamed Demon known only as The Water Devil (水魔 Suima). He was the demonic counterpart of Troy Mariner and a member of Tartaros.

Magic & Abilities
Water Devil Slayer Magic (水の滅悪魔法 Sui no Metsuaku Mahō):
 * Water Devil's Rage (水魔の激昂 Suima no Gekikō): The Devil Slayer's equivalent of a Dragon Slayer's Roar and God Slayer's Bellow, Demon Troy, after inhaling, releases a large blast of purple water from his mouth, directing it towards a target area. The breath attack inflicts great blunt damage upon those it contacts, causing everyone unable to resist it to be sent flying away with great force, as well as leaving behind a trail of destruction in its wake, heavily damaging the area it passes through.
 * Water Devil's Slash (水魔の鉤爪 Suima no Zangeki):
 * Water Devil's Fist (水魔の鉄拳 Suima no Tekken):
 * Water Devil's Talon (水魔の Suima no Kagizume):
 * Water Devil's Shield (水魔の Suima no Toku):
 * Water Devil's Abyss Splash (水魔の淵飛沫 Suima no Fuchi Shibuki):
 * Water Devil's Whiplash (水魔の鞭打ち症 Suima no Muchiuchishō):