Xu You

Xu You (許攸, rōmaji: Kyo Yū) is a military officer and politician who is historically described to be an invaluable and reliable friend of Yuan Shao and Cao Cao. He loyally followed Yuan Shao during several campaigns. Tired of having his advice being constantly averted, Xu You joined Cao Cao. Though his defection was at first tested, Cao Cao was delighted to have Xu You serve him.

Role in Games
In Dynasty Warriors 7, Xu You defects to Cao Cao's forces and, along with Cao Pi and Jia Xu, burn down the Wu Chao supply depot to significantly lower enemy morale.

Quotes

 * "Guards, I am Xu You. I come at Lord Yuan Shao's request. Open the gates!"