Tien is a bodyguard of Mifan's Emperor, Chiaotzu. However, he is part of a plan with Master Shen and Tao Paipai to take over the kingdom. Tien has stolen doll Ran Ran from Chiaotzu's room and takes advantage of collecting the Dragon Balls for finding Ran Ran to take over Mifan. But, he gradually gets friendship with Chiaotzu. At the night before the tournament, Chiaotzu feels fear and tells Tien his nightmare.
At the next day, when Bora is killed by Tao Paipai, Tien and Shen take over the government. They command Mifan's army to arrest Master Roshi and Krillin. Tien beats Master Roshi with a single hit. Shen orders Tien to kill Chiaotzu but Tien refuses to do this. Shen shoots Dodon ray at Tien, Tien blows him away with his Tri-beam. After all, Tien gives Ran Ran back to Chiaotzu. Chiaotzu asks him that if he could stay with Chiaotzu.
