His Legend Mode in Dynasty Warriors 4: Xtreme Legends occurs after Liu Bei flees from his defeat at Yi Ling. With Lu Xun chasing them, Zhuge Liang hurries their army to safety by fleeing into the Stone Sentinal Maze. Though knowing what awaits him is a trap, the young strategist enters the maze to beat Zhuge Liang's strategy. The maze alters its course depending on its guests' steps, sliding its gates open or closed based on the room they have enter. Lu Xun's party is also ambushed by Zhuge Liang's troops as they progress closer to the strategist's location. With the help of a kind elder, he eventually solves the puzzle and cuts Zhuge Liang down.
A member of a powerful family, Lu Xun is described as a young yet talented warrior whose talents are scouted by Lu Meng in Dynasty Warriors 5. He starts his story after the Battle of Chi Bi and suggests to invade the south while Shu and Wei fight with one another. Finished with their suppression of the Nanman tribe, they decide to advance to Jing. Facing a common foe, Wu join forces with Wei to defeat Guan Yu at Fan Castle. Lu Xun leads the attack and distinguishes himself as a capable warrior to Sun Quan. As the sole person Lu Meng recommended as a successor, he causes Shu's defeat at Yi Ling. Shu is crippled with Liu Bei's death and, with Wei still a looming threat, Wu shifts their focus to their northern opposition at He Fei Castle. Slaying Cao Pi in the conflict, they finish off Liu Chan at Bai Di Castle. Lu Xun continues to serve his liege in the land ruled by Wu.
He shares his Legend Mode with Sun Quan and Sun Shang Xiang in the Xtreme Legends expansion. Described as the new generation of warriors, they work together at Shi Ting. Lu Xun acts as the army's main strategist and coordinates the battle's progress. With Sun Shang Xiang fighting in the west, Lu Xun fights in the eastern path to surround their foe, Cao Xiu. He slays the traitor within Wu's ranks and secures the safety of their army. After his ploy to isolate Cao Xiu succeeds, Sima Yi springs an ambush on Sun Quan. To counter, Lu Xun saves his lord by setting the Wei troops on fire. Defeating the strategist and Cao Pi ends the stage.
In Dynasty Warriors 6, Lu Xun works to restore his clan's honor. He first impresses Sun Ce at the Battle of Xu Chang, where he clears the path for the armies to attack Xun Yu. After his lord's death, Lu Xun helps fortify Wu's defenses by keeping peace around their boarders. To amend for his absence at Chi Bi, he returns to personally lead his kingdom's army at Fan Castle. Before an angered Liu Bei strikes, Sun Quan privately reveals to him his dream of an united land. Inspired by his lord's vision, Lu Xun discards his original goal and believes that the land's successors can shape their new dream. Wu removes its core resistance with Liu Bei's death at Yi Ling and Cao Cao's passing at He Fei Castle. Supported by his lord, Cao Pi, and Zhuge Liang, he declares that the land now belongs to everyone and asks every man present to help build a new future together.
Role in Super Smash Sisters
Lu Xun is a non-playable helper in Super Smash Sisters. He uses his 2 sabers in combat and sometimes his Warriors Orochi fire skill. When he has a final smash power, he can order a fire attack that sets the stage on fire and slowly gives damage to the opponent.