Gogo Yubari (portrayed by Chiaki Kuriyama) is a young associate of O-Ren Ishii. Gogo is the bloodthirsty and ultraviolent seventeen-year-old schoolgirl who takes a sadistic delight in killing. Her fighting style is a combination of wushu techniques using chain whip and rope dart. She is O-Ren's top assassin and personal bodyguard.
She takes on Beatrix Kiddo when the latter has already slaughtered several of O-Ren Ishii's immediate guards at the House of Blue Leaves. Although the Bride gives her the opportunity to walk away, Gogo refuses and takes her on with a large meteor hammer, almost overcoming the Bride by strangling her savagely with the chain. Eventually Kiddo distracts Gogo by driving a broken chair leg studded with nails into her foot, then kills her by driving the nails into the side of her head.
Cache is a camo pill bottle in a bush.