Master Lao

Master Lao is the old hermit who was fabled to have given Zhang Jiao the texts of the Taipingjing in Romance of the Three Kingdoms. These books provide Zhang Jiao with the basis for what would become the Way of Peace to the Yellow Turbans. He claimed to be an immortal from the southlands.

In Dynasty Warriors 8: Xtreme Legends, Master Lao's name is changed to Zhuangzi

Dynasty Warriors
In Dynasty Warriors 5: Xtreme Legends, Master Lao hosts a tournament between Zhang Jiao, Pang Tong and Zuo Ci for the Way of Peace scriptures. His first trial will be to have the contestants deal with soldiers. After the first trial, he will begin his second trial which has him summon winds. Once the winds are defeated, he will issue the third trial which is to defeat the phantom Liu Bei, Sun Jian and Cao Cao while dealing with elephant riders and poison mist. His fourth trial is to activate explosive geysers and summon falling boulders while contestants must deal with copies of themselves. Finally, Master Lao will summon a phantom Lu Bu for the final trial along with powerful tornados. After Lu Bu is defeated, Master Lao will give the book to the winner.

In Dynasty Warriors Vol. 2, Master Lao is a bonus officer who guards the treasure trove of "Battle at the Yellow River" for the Wu forces. As an officer, he will greatly increase the player character's life and attack power. His skills are the Holy Spell, which grants the Light element to all the player character's attacks, and Sorcerers and Illusion which causes sorcerers and illusions to respectively join the player's unit.

In Dynasty Warriors 8: Xtreme Legends, Master Lao will appear in Guan Yinping's search for Red Hare. If all the officers in the groups that the Shu forces encountered were defeated, Zhuangzi will be revealed to be the one who was taking away the animals. When fought, he states his desire to keep the animals from being

Warriors Orochi
In Musou Orochi Z, Master Lao will appear at Chibi among the Mystic forces battling against humanity.

Quotes

 * "Come, heroes of the age. Let me share with thee my knowledge."
 * "It takes a shameful individual to utilize animals on the battlefield. I must save them"
 * "Sentient beings of nature should not be used as weapons of war. That is why it is up to us to protect them"
 * "How do you know what purpose we use our animals for? We're simply looking for a horse that's like family to me."
 * Zhuangzi and Guan Yinping; Dynasty Warriors 8: Xtreme Legends

Romance of the Three Kingdoms
Having failed the imperial examinations along with his brothers, Zhang Jue was beckoned by an old man in a cave while out searching for medicinal herbs. The old man presented Zhang with three books, and advised him to research and study the books extensively, and to not have a single doubt in doing so. The old man stated that these books were the legendary Taipingjing, and that he believed that Zhang could master the book, and save mankind with heaven's knowledge. When Zhang asked the old man for his name, the old man claimed he was an immortal from the south. After which, the old man vanished without a trace. Through the book's words, Zhang Jue and his brothers were able to control the weather, and they would soon form the Yellow Turbans.