Zhang Yun

Zhang Yun (onyomi: Chō In) is either one of Liu Biao or Cai Mao's relatives (nephew in the latter case) who has little historically noted for him.

He first served Liu Biao but after his master's death, he joined Cao Cao's forces with his new master, Liu Cong. Record of Xiangyang remarks he was well liked by Liu Biao and conspired together with Cai Mao. Aside from his surrender, he has no other mentions in history. Zhang Yun has greater significance in Romance of the Three Kingdoms.

Role in Games
In the Dynasty Warriors series, Zhang Yun is a minor officer who is usually paired with Cai Mao and optional to defeat at Chi Bi.

In Dynasty Warriors: Unleashed, he and Cai Mao are given the duty of training Cao Cao's troops in Chibi. Because their expertise in naval warfare is invaluable to Cao Cao, Zhou Yu frames them as conspirators of the Sun family, resulting in their execution.

In Dynasty Warriors 9, through the messengers of Jiang Gan, he may be executed before the battle even commences but should the player ignore the plot, he and Cai Mao join the final attack on Chibi and resolve to defect.

Romance of the Three Kingdoms
He becomes commander for Cao Cao's navy at Chi Bi. Together with Cai Mao, he was executed by Cao Cao due to Zhou Yu's plot.