A Hippo Rhino (カバサイ Kabasai?) is a purple rhino with a hippo's mouth. It can be mistaken for a rock when its head is downwards. It's also a good swimmer as it was able to swim far out to the sea. It fell in love with the Going Merry after it landed on it which made it spit out a fish it was choking on. It decided to swim to the Going Merry and propose to it.