The owner and director of the Oumagadoki Zoo. He is very tall and has the face of a rabbit. He was a human who was cursed by a magical rabbit. He now runs his zoo filling it with magical animals he finds, because if he finds enough of them, he can use their magic power to reverse the curse laid on him. Though not always the easiest to get along with, he sees the animals not as what they are, but rather as comrades.
Shiina is mostly known as the lunatic rabbit with no feelings for another, only when one of his friends are in danger. He shows his true love for animals when one of his friends is getting hurt or kidnapped most of the times or went in the trouble. Shiina doesn't listen to anyone, only to himself. Somehow his original body shows whenever he saves someone that is too close to him, which shows that the Ghost Rabbit gives him hints away to understand that, but he's a complete idiot that doesn't understand most of the things. In his childhood he was doing nonsense that causes him only trouble.