Silva was born on December 13, 1996, in Foz do Iguaçu, Paraná, Brazil. With the support of his wife Carol, Jean found not just a martial art, but also a path to salvation in Muay Thai.
Silva has an alter ego, a distinct identity that, according to him, manifests during his prolonged outings to the octagon or in the course of a fight, which he calls "Lord" or "Lord Assassin." He credits his wife for helping to control this alter ego when it appears outside of his career as a fighter.