Kin

"One can never really get rid of one's past. But one can try, right?."

- The Master of Spirals

Once the child of the leader of an infamous Cult of Zeref, Kin (金, Kin) is a Hunter Exorcist Mage (悪魔祓いの魔導士, Akumaharai no Madōshi) looking to free herself from a dark past. On the prowl for anything Zeref related in Earth Land and beyond, Kin is an employer of Devil Slayer Magic as her mage title suggests.

Her own variant, Iron Devil Slayer Magic details the creation, consumption and manipulation of various metals to slay demons. She first became capable of casting the magic a decade ago, when she accidently opened her Cult's most sacred book of Zeref, unleashing a demon onto the world. Many of the Cult were massacred within minutes before the demon departed and that left her father and a few others to read the book and help her master her magic. After a year or so, her father deemed it time for her to slay the demon, and become an even stronger weapon through the use of her magic. However, after tracking down the Demon, the rest of the Cult died, including her father before she managed to grievously injure the beast and it escaped.

Since then, Kin has dedicated herself to erasing its existence, as well as the existence of Zeref's influence in general as well as those who embrace it or his magic like her Cult did. She has become known the Mechanical Destroyer as she hunts down Dark mages, demons and anything evil using her Devil Slayer Magic. Kin also developed the title for her use of her Devil Slayer Magic and Machina Soul.

Trivia

 * Appearance based off Samus from Metroid.