Hanzo

"My blades will annhilate all who stand before me. Be it a God, or a Demon, it matters not. They will perish."

- Hanzo talking about his swords Hanzo (半蔵, Hanzō) is an infamous Demon, an Etherious from the Book of Zeref, who was summoned 400 years ago, but due to his Curse's nature, abandoned his original goal and began wandering, evantually becoming known as the Separator of Heaven And Earth (分離機の天地, Bunriki no Tenchi), due to his outrageous swordsmanship prowess, and is hailed as a powerful, and fearsome individual as a result.

Curse
Metamorphosis (変形, Henkei lit. Monster):

Trivia

 * Hanzo is named after Hattori Hanzō, a famous samurai, and ninja, who saved the life of Tokugawa Ieyasu, a man would become a ruler of a united Japan.
 * Hanzo's appearance is based off of Susanoo from Naruto.