Yoop is a curious alien who is silly, humorous, and clumsy. For example, Yoop made a mess because of his carelessness and hid it from Plory. She was happy. He sometimes is a little disorganized and loves making jokes. Yoop sometimes does not listen, so Plory has to correct him at times, whether or not she wants to. Yoop is honest. One time, Yoop broke the multicolored vase. Plory was mad, but she softened up when Yoop was honest, so Plory values honesty.