Lucia039s guardian who serves as her guide. Hippo accompanies Lucia in her search for her pink pearl and is among those who voice disapproval of her relationship with Kaito. He is also polite always putting san after every name even when angry. In the anime he is shown as Lucia039s pet penguin. Later on he is able to transform into a very cute human boy as well as a creature called Hippocampus. He later falls in love with Yuri. And Yuri also loves his human form.