Zang Ba
When Lü Bu and Liu Bei were in conflict, the warlord Cao Cao, who controlled the Han central government, led his forces east to Xu Province to support Liu Bei in his war against Lü Bu. Zang Ba sided with Lü Bu against Cao Cao and Liu Bei, but after Lü Bu's defeat and execution following the Battle of Xiapi, Zang Ba lost his ally and became a fugitive.