SD - Gundam Zhang He

Zhang He was a distinguished military general under the powerful warlord Cao Cao . He began his military career when the Yellow Turban Rebellion before defecting to Cao Cao. He participated in many major campaigns, including those against Yuan Tan,Zhang Lu, Ma Chao, and Liu Bei. After Cao Cao's death in 220, Zhang He was primarily engaged with defending Cao Wei against the Northern Expeditions led by Chancellor Zhuge liang of the Kingdom of Shu
Zhang He was one of the 5 top generals of the kingdom of Wei. He was also said to be full of respect for Confucian scholars, and supported the measure to adopt masters of the Five Classics in court.

SD - Gundam Zhou Cang

Zhou Cang strong warrior with a dark face and a wiry beard, Zhou Cang became caught up in the caught up in the Yellow Turban Rebellion and joined the rebelsned the rebels. It was during this time that he first met Guan Yu, who impressed him with his courage and sense of honor. However, after the Rebellion was crushed by Han troops, Zhou Cang became a renegade bandit. . After encountering Guan Yu once more on a mountain road, he swore his loyalty to the worthy general and was appointed to the rank of Guan Yu's Saber Carrier. A skilled boatman, his talents were critical in helping achieve Guan Yu's water attack. At Fan, he managed to capture the fearsome warrior Pang De during the flooding of the castle. Unfortunately, his fierce loyalty to his lord would cost him his life, when, upon seeing the heads of Guan Yu and Guan Ping displayed by the forces of Wu, he committed suicide. After Guan Yu was made a deity, Zhou Cang was made part of the holy trio, along with Guan Yu's adopted son Guan Ping. His face is often portrayed as coal black, a stark contrast to Guan Ping's pure white features, and Guan Yu's shades or red.