Leo is an egg. He is brothers with Eggbert. He happily exists in his own blissful little reality engaging in frivolous activities. Eggbert and Leo do everything together. Eggbert is considered the "brains" of the two, while Leo is his supportive right-hand man. Eggbert and Leo float in and out of the group's activities and provide their own special perspective. Oswald is constantly trying to figure Leo (and Eggbert) out. Just when he starts to make sense to him, they'll do something that confuses him more than ever.
Eggbert is white. He has a blue and white-spotted shirt and a blue hat. He has tiny arms and tiny legs.
Leo has appeared in many episodes of Oswald.