Nefertari Vivi is the princess of Arabasta. She is the daughter of Nefertari Cobra and Titi. She debuted as one of the main antagonists of the Reverse Mountain Arc as a Bounty Hunter; under the Baroque Works codename Miss Wednesday. During this time, she was partnered with fellow Frontier Agent; Mr. 9. However, after the events during the Whisky Peak Arc, she and her pet super spot-billed duck Karoo ended up joining the Straw Hat Pirates for most of the Arabasta Saga after revealing herself to be a spy plotting against Baroque Works. She left the crew after defeating Baroque Works to stay in her home country, but has been shown to be keeping track of the Straw Hat's progress.