His Legend Mode in Dynasty Warriors 4: Xtreme Legends takes place after Wei's defeat at the Battle of Chi Bi. Cao Cao retreats north and Cao Ren stations himself within Jiangling to guard his escape. He defends against the pursuing Wu army by concentrating on defense. His subordinate, Niu Jin, gives into Zhou Yu's taunts and recklessly charges from out of Wei's castle. However, he is soon surrounded and on the verge of defeat. To rescue his retainer and bring him back safely, Cao Ren decides to join the march. Worried that the castle will fall without him, the castle guards ask Cao Ren to reconsider. Even with their pleas, he hurries to Niu Jin's aid. While escorting his general back, Zhou Tai and Zhou Yu attack them. Cutting them down and having Niu Jin escape ends the conflict.