Hei Acheron

Hei Acheron (特・アケロン Toku Akeron), born as, Hei'an (平安 Toku'an), as is a mage under the employment of the Elysium Guild, and a member of Team Leviathan, being the first to join aside from the team's founders, Jinshu Orion, Lindi Clementine, and Blitz. As such, Hei is the fourth overall to join the team's as a whole. A supermajority of Hei's past is a mystery, however it is known that he was born to a human, and a demon of some sort, and later became a wandering Mage.

On the magical aspect, Hei utilizes a form of Devil Slayer Magic, referred to as "Darkness Devil Slayer Magic", which grants him the ability to produce, manipulate, and consume all forms of darkness, granting him numerous abilities, and making him a powerful ally.

Magic and Abilities
Darkness Devil Slayer Magic  (闇の滅悪魔法) Yami no Metsuaku Mahō):

Master Hand to Hand Combatant:

Superhuman Strength:

Superhuman Speed:

Superhuman Senses :

Trivia

 * Much like Jin, and the rest of Team Leviathan, Hei's name, personality, backstory and abilities were taken from and inspired by a main character in Rukiryo's "W.I.P" Manga, "The Legend of Twelve", or "Ju-ni no Densetsu".
 * Hei's first name, much like the rest of his teammates, has a meaning behind it. Hei'an means "Darkness" in Chinese, and Hei is just a shortened version of that, which is a reference to his Darkness based abilities in Rukiryo's manga.
 * His surename, Acheron, is also a reference to his dark naming scheme. Acheron is one of the rivers in the Greek Underworld, Hades, along with famous ones such as the Styx.
 * Hei's appearance is that of Ling Yao/Greed from the "Fullmetal Alchemist" Franchise.