Zhang Bao was a younger brother of Zhang Jiao. Zhang Bao was a general in the Yellow Turban Rebellion (184 CE). He was defeated by the task force dispached by the Han government, which included the generals Liu Bei and his "brothers" Guan Yu and Zhang Fei.

After the death of Zhang Jiao (ironically due to illness) the yellow turban rebellion lacked leadership and so crumbled into dust. Zhang Bao claimed to be a Taoist but was misguided, and did not see the true purpose of Taoism.

See also: Romance of the Three Kingdoms