Born in 1067, Simon is the son of Trevor Belmont and Sypha Belmont. At the age of six, his parents were murdered by the forces of Dracula, Sypha to a pack of lycans and Trevor against Dracula in single combat. Simon was lucky to escape with his own life. Lost and alone, he was found in the forest by some of the mountain people, taken in and raised among them.

However, he never forgot what had happened to his parents and vowed to deliver vengeance one day upon those responsible. He trained hard and was extremely gifted in combat, yet life was hard for young Simon growing up. Always an outcast among the tribe, he developed a strong will and stubborn attitude that would always boil over into rage, and men soon came to fear him and his prowess in the arts of war. He fiercely protected a fragment of a magical mirror given to him by his father and always wore it around his neck for safekeeping.