Roy was the son and oldest child of Sara and Eugene Greenhilt, a highly accomplished illusionist, who wished for his son to follow in his footsteps and enroll in Mage College. Roy, however, had other ideas. Inspired by tales of his grandfather and the greatsword that he wielded, he enrolled in Bash University (Bash U), a college for those intending to become fighters.
Roy about to leave for Fighter College, please take note of the afroRoy, being highly studious, found himself to be something of a social outcast, as a result of his high Intelligence. . After three years of study, he was surprised to receive a visit from his father, who had disowned him when he chose the fighter's path. Eugene explained to his son that he was dying of old age and that Roy and his younger sister Julia would inherit a blood oath of vengeance that he had sworn against the sorcerer Xykon, who had slain Eugene's mentor many years earlier. Despite his father's firm belief that Roy, as a lowly fighter, would be incapable of facing Xykon (now having become a Lich) successfully, Roy swore to continue his father's quest to destroy the sorcerer. Shortly after his father's death some years later, Roy graduated from college with an MBA (Master of Battle Administration).