Why doesn't the Dragon Ball King play, but watch?

North Kaiō is the god in charge of the northern galaxies (including the earth). He lives with his pet orangutan Bubble (and Gregory the grasshopper in the animation) on the planet king. The gravity of this planet is 10 times that of the earth. After living in Wang Xing for a long time, Wang Jie fell in love with driving around in Wang Xing, counting the grass on the ground and playing bubble tricks! In particular, he likes to tell cold jokes (this time he wants to compete with the materials), and he is also very humorous and distinctive. For example, he will tell jokes to Wukong and Bike before teaching them martial arts. Only when he laughs at the king of the world can he agree to teach martial arts. He taught Wukong some very powerful tricks, such as Wang Jie Boxing and Yuan Qi Playing, which played an important role in Wukong's confrontation with Dahl and Frisa. He can talk to anyone directly, no matter where that person is, he can talk to people all over the world, and he can also let what others say reach everyone's ears. Wukong teleported Charouk, who was about to explode, to the Star of Kings, where he, Bubble and Gregory died. Although he died, he continued to play a role in the plot behind Dragon Ball Z, such as taking Wukong to see the king of the world and the God of the Western Galaxy. Always quarreling with North Kaiō. Bet with North Kaiō at the First Great King Martial Arts Conference that if Wukong wins the ribs-rice from the Western Galaxy, he will give his star of the king to North Kaiō. In the end, Wukong won, but Sister Wang thought that the two men had fouled, so the matter was abandoned. The East King is the God in charge of the East Galaxy. She is a queen, fat and always likes to race with others in a racing car. The god in charge of the southern galaxy. He is taller than the other three world kings. The king of the world is above the four kings of the world. He is a lovely person, who doesn't practice kung fu often and often cheats. I like to hold budo conferences, which have been held many times.