Sima Yan

Sima Yan is the son of Sima Zhao and Wang Yuanji and the Grandson of Sima Yi. Over the years the Sima clan had gained an enormous amount of power within the Wei court, and so in the year 265, he forced Cao Huan to abdicate as emperor and took his place, beginning the Jin Dynasty.

Role in Games
During the ending cinematic for Jin's Story Mode in Dynasty Warriors 7, Sima Yan leads troops to overthrow the Wei emperor to become emperor himself after his father's death, establishing the Jin Dynasty in place of his father. The Wu kingdom cripples over time and surrenders to him, signaling the end of the Three Kingdoms era. Sima Yan's face is not shown during the movie and he doesn't participate in any of his father's campaigns.

He makes an appearance with his father in Warriors Orochi 3.