Guan Yu

“Guan Yu was a general serving under the warlord Liu Bei during the late Eastern Han Dynasty era of China. He played a significant role in the civil war that led to the collapse of the Han Dynasty and the establishment of Shu Han of the Three Kingdoms, of which Liu Bei was the first emperor. He waged many famous battles, such as the battle of Red Cliffs.
During the battle of Jiangling, Guan was sent to block Cao Ren's supply lines via infiltration. He led a special force composed of navy and infantry, to go up the Han River, and attacked the city of Xiangyang, which was guarded by Yue Jin. Guan was defeated by Yue outside the city walls. However, Liu Bei became a powerful warlord as he was joined by Lei Xu and his troops numbering to tens of thousands, and soon conquered the southern Jing Province without much resistance. Liu Bei promoted Guan to the rank of "General Who Exterminates Rebels" and appointed him as the governor of the city of Xiangyang.” -Wikipedia

Later, Guan Yu was defeated and captured at the battle of Fancheng.  Due to his refusal to join the Eastern Wu and Sun Quan, he was executed.  His head was sent back to Liu Bei with the title “Marquis Zhuangmou,” which indicated his failure to live up to his reputation.

The information above is based upon the Record of the Three Kingdoms.  To align with the concepts of the other heroes, it is recommended to read the Romance of the Three Kingdoms.

Readings:  Record of the Three Kingdoms, Romance of the Three Kingdoms