Ringo (瀬戸 林子 Seto Ringo) is a 14-year-old pop idol from Tochigi who plays Angelic Layer, over the objections of her manager. In order to become strong and beat Hikaru, she studies Hikaru's past battles, notably against Suzuka, because she didn't lose quickly. Ringo likes living freely, and often escapes from her manager to get out of doing work. Ringo encouraged Misaki between matches. Ringo's angel is Lanka.
She has blonde/yellow and blue eyes.