Sima Yan

Sima Yan is Sima Yi's grandson and one of Sima Zhao's sons. 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. His actions alienate his father from the court, leaving with Sima Zhao with no other place to go. As his father freely wanders the land without rank, Sima Yan establishes the Jin Dynasty. 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.