X teroin, also known as Johnathan Fitzgerald Michael, is the spirit of a SEGA employee who, through a combination of being overworked and overdosing on energy products, would wind up in a copy of the fictitious game known as "Sonic Discoveries". Years after his death, his daughter, Marilyn, would find the disc and boot it up, none the wiser that the contents of the disc may hold the secrets to the disappearance of the family patriarch.