Jiang Wei

The Loyal successor of Zhuge Liang for Shu, Jiang Wei would be the turning point of Shu. Once a Wei officer, Jiang Wei was tricked into defecting from Wei. He would later be Zhuge Liang's successor after he died. He was cut from Dynasty Warriors 6

Warriors Orochi
In Warriors Orochi 2, Jiang Wei has left Shu to test his skills and has found himself in the service of Yuan Shao. When Zhang He attacks Yuan Shao at Shizugatake, Jiang Wei is given his chance to test his mettle. One of Zhang He's plots uses the discord between Yuan brothers to turn them against Yuan Shao. First, Zhang He sends Xun You to convince Yuan Tan to defect to Wei, which he does. Seeing this, Jiang Wei has Yuan Shao prepare a letter to send to Yuan Xi to prevent him from defecting as well. When Jiang Wei is caught, he defects to Wei and convinces Yuan Xi to defect as well.

Next, at Yamatai, Jiang Wei and Toshiie Maeda attempt to locate and capture Da Ji and Himiko. However, they were unaware of the defenses that Da Ji had prepared so well. However, they are given aid by Nagamasa Azai and his allies, the Asakura. In the end, they allow Himiko to escape but manage in capturing Da Ji.

Dynasty Warriors 5
True musou : Adds fire effect and at the end Jiang Wei releases a huge fireball forward
 * undefined: (In air) Multiple thrust downward while hovering in the air

Dynasty Warriors 4
The main thing to get Jiang Wei's weapon is to enter each castle door way from the outside. You should gain Jiang Wei's ultimate weapon at the end of the battle after you defeat Cao Ren's officers, Yin Shang, and Liang Xu. (NOTE: It take a while to get it so keep trying.)
 * Ultimate Weapon: Blink
 * Power: 55
 * How to get it: Battle of Tian Shui (Musou Mode Only)