Karu is a beloved character from the anime series "One Piece." He is a large, flightless duck known as a Super Spot-Billed Duck and serves as the loyal pet and steed of Princess Vivi Nefertari of the Alabasta Kingdom. Karu is a member of the Suna Suna Clan, an elite squad of fast-running ducks. Despite not being able to speak, his bravery and loyalty are evident, especially when he aids Vivi and the Straw Hat Pirates in their quest to save Alabasta from the sinister plans of Baroque Works. His courage and unwavering dedication make him an endearing part of the series.