Dynasty Warriors 6 - Other Character

 Lu Bu :

 Clear musou mode with Cao Cao, Liu Bei, Sun Jian and Diaochan.

Dong Zhuo :

 Complete battle objective 1, Battle of Hu Lao Gate (Lü Bu Scenario)

Yuan Shao :

 Complete battle objective 3, Battle of Guan Du (Cao Cao Scenario)

 Diao Chan :

Clear musou mode with one character from each of Wei, Shu and Wu.

Zhang Jiao :

Complete battle objective 3, Yellow Turban Rebellion (Allied Army)