Master Shen (鶴仙人 Tsurusen'nin) is the master of the Crane School and Mercenary Tao's older brother. Even though he was older, Mercenary Tao was always one step ahead of him. A rivalry then grew between them. They began to fight on the smallest things. One day, Master Shen went out of control and threw a bowl of rice at Mercenary Tao which caused them to split up. He and Master Roshi were both students of Mutaito, and they quickly became rivals. Master Roshi states that when King Piccolo defeated Mutaito, causing Mutaito to leave them, Shen changed for the worse. Mutaito returned and took care of King Piccolo, and died in the process, but Shen was never the same again. He started The Crane School, whilst Roshi started The Turtle School and began taking in students himself.