The Fourth Neck (四の首, Shi no kubi), she is a delusional pop idol whose dismal sales (68th, though Reiko constantly taunts her with "69th") are partly responsible for her becoming one of the Orochi. She is almost manic in her behavior, constantly trying to impress the other Orochi with her showmanship, but her energetic exterior hides a dark past.

(from wikipedia)