...Riku's 'Scent' is identical to the superior's because, Riku's nobody is the superior at that time. Now, what happens when Riku beats Ansem at the end of his story? it cuts to him walking down the road in an Orginazation XIII cloak, but where did he get it? He met his nobody and merged with him-A 'Chaser' is born...
He Got His Cload Frim DiZ (Ansem The Wilse) in the end of the Re:CoM Reverse/rebirth you can watch it here on kh-vids, Its NOT subbed so go to unsubbed cutsanes . You Can clearly see DiZ giving the cloak to him... ):
