Yes, he and Xu Zhu was the bodyguards of Cao Cao, until Dian Wei was killed when there was a betrayal from inside.
No, there was another son named Cao Ang, but before he could take the throne, there was an incident that got hit killed. Which was the attack where they also killed Wei's general Dian Wei.
Dian Wei is the full name of a first class warrior subordinated to Cao Cao. He was very valorous but died early in an ambush when covering his master to retreat. His nick name is E lai (恶来), or "Evil's Coming" which is translated literally.
Dian Wei died in 197.
Cao Wei was created in 220.
Cao Wei ended in 265.
Defeat Cao Cao 4 times. Defeat Xiahou Dun, Xu Chu, Cao Ren, and Dian Wei. Meet with Da Qiao after she appears for a cutscene. Achieve 150 KO Count. Method 2 : Defeat Cao Cao 4 times. Defeat Xiahou Dun, Xu Chu, Cao Ren, Dian Wei, and Xiahou Yuan. Achieve 100 KO Count. If you defeat the 4 generals (Xiahou Dun, Xu Chu, Cao Ren, Dian Wei) before Cao Cao's 4th appearance, they will re-appear, forcing you to defeat them twice unnecessarily. So wait until after Cao Cao's 4th appearance then defeat them to minimize trouble. A convenient thing to do would be to deplete the 4 generals' HP down low and leave them, then come back and defeat them after Cao Cao's 4th appearance. Both methods must be done in Expert.
Li Feng - Cao Wei - died in 254.
Xu Chu is the full name of a general belongs to the kingdom Wei during the Three Kingdoms period. Along with Dian Wei, they were both favored warriors of Cao Cao. For his valor, he was given a nickname called "mindless tiger" (虎痴). His other name is Xu Zhong-kang (许仲康).
Cao Cao, Semi Yi
To unlock Cao Cao, you must clear Musou mode with two other Wei generals
Cao Cao is the full name of the founder of Wei(魏), the strongest kingdom during the Three Kingdoms period, whose other name is Cao Meng-de (曹孟德) and called Wei Wu-di(魏武帝) deferentially in historical books.
Defeat all these guys in hard and in 7 minutes. Xiahou Dun, Xu Chu, Dian Wei, and Cao Ren.