Tennis Ball is a tennis ball who is known to be intelligent and ideal for solving problems and creating new innovations. Unfortunately, he is clumsy because of his size and the fact that he's armless. He is also cautious, and prefers to think first before making most decisions. He is curious, which is why he's always asking questions. He is amused by trivia. He isn’t shy from speaking up if he knows the facts. He always hangs out with Golf Ball, but he lets her take the lead. He is a male.