Ryo-Oki is some type of cross between a cat and a rabbit. This isn't the only odd thing about this creature; it can also transform into a spaceship. Weird. Anyway, Ryo-Oki is always looking for one thing...CARROTS! This thing will kill for carrots! It's hilarious. Ryo-Oki is Ryoko's pet, and I have only seen another creature like it, owned by someone that looks almost exactly like Ryoko. That someone is a bounty hunter and is always trying to track Ryoko down, for reasons unknown.