The Riku Replica is a replica of Riku created from the data Vexen had gathered. He appeared in Kingdom Hearts Chain of Memories and acts as one of the main antagonists of the game. Though he almost always appears in Dark Mode, the only time when he did not have this suit on is his debut in either storyline. Originally a subject to test the real Riku, the Replica was later exploited to become a puppet of Marluxia who attempted to use him to manipulate Sora and overthrow Organization XIII. As Dark Riku, he serves as a member of the real Organization XIII.