Uchiki Kurayami, originally named Juan Vicente Sánchez Ramírez, is originally from Mexico. During his childhood and adolescence, he was ambitious and longed to be a millionaire. Because of this, he hated his father for being poor. In his attempt to escape and earn money, he was kidnapped and nearly sold. This failed, resulting in . He was rescued by a group of men, and a man with a Japanese identity took pity on him and decided to train him to become the most feared assassin of heroes and villains, known as the Feathered Serpent or the Dragon. He is now in charge of taking the lives of those who don't deserve the title of heroes and doesn't give villains the chance to rebuild their lives and obtain their powers for a purpose that even he doesn't know. Kurayami is currently between 25 and 30 years old, and few know when he was born.

Currently it is a He currently works for the mafia, however he is one step away from being the new boss.