司馬懿
Sima Yi (Zhongda) was a Cao Wei general and politician. His descendants eventually overthrew Wei, formed Jin and unified China for a brief period (until they were kicked southwards by northern invaders because of the state's own initial weakness and "civil war":http://en.wikipedia.org/wiki/War_of_the_Eight_Princes ).

In Romance of the Three Kingdoms, he was well known for his rivalry against [[Zhuge Liang]]. This is no different in [[Shin Sangoku Musou]]. His Yokoyama Mitsuteru counterpart is best known as the source of the "”Wait. Don't be upset. This is Zhuge Liang's trap”":/posts/243120 meme.
sima yi