Liu Bei is the founder of Shu and sworn brother of Guan Yu and Zhang Fei. He participates in battles against the Yellow Turban rebels and Dong Zhuo's forces. At the Battle of Hu Lao Gate he and his two sworn brothers duel with Lu Bu. Most of the battles he is involved in are against Cao Cao, with the exception of the Battle of Cheng Du against his distant relative, Liu Zhang. His last level is the Battle of Yi Ling against Sun Quan, to avenge the death of Guan Yu.
Source from Wikipeida