Yusuke Urameshi (浦飯 幽助, Urameshi Yūsuke?) - Yusuke is the toughest kid in Sarayashiki Junior High School and has a typical tough guy approach to everything. He becomes a spirit detective after he died and was revived by Keiko's kiss. His main attack is the Rei Gun (Spirit Gun in the English Dub) where he can manipulate his Reiki into a projectile. He learns many other attacks from Genkai including the spirit gun dublu and shot gun. He mainly grows in strength from all of his different battles, because he responds to danger by unleashing his full strength. Near the end of the series, it is revealed that Yusuke is in fact a half demon. His demon ancestor mated with a human female and arranged so that a descendant of his, once strong enough, would become a half demon. This explains Yusuke's incredible spirit powers.