Repliku

"Fakes should be destroyed!!"

- Riku Replica to Sora. "I'm not Riku. I'm fake. I can't remember when I was created, or why... All I've got left is you and Naminé. But those memories aren't real...""

- Repliku

Repliku also known as the "Riku Replica" is a clone of the original Riku given the memories of its model in Kingdom Hearts: Chain of Memories and Kingdom Hearts 3D: Dream Drop Distance.

Birth
The Riku Replica was an experimental Replica made by Vexen after he studied and took interest in the original Riku. With the help of Naminé, Vexen was able to give the Replica memories to help motivate him to help them. But the Replica was ultimately defeated by Sora, and has its Heart was destroyed by Naminé in an attempt to calm its anger. After miraculously reviving it, it expressed that despite having no memories of its own it will protect Naminé, it is growing exponentially in strength, however it still felt empty inside.

Death
Wanting to become someone unique, Axel convinces him the only way to do this is to gain power Riku does not have. To do so it hunted down Zexion, who had just lost a fight with the real Riku, so that he could absorb his power and challenges the real Riku to one last fight in which the Replica would not hold back. After being defeated by Riku the Replica dies, finally at peace with itself as Riku tells it that its Heart will go to the same place his would.

Return
Repliku appears in Dream Drop Distance. He appears inside Monstro, with Pinocchio, wearing the Organization XIII black coat. Riku is shocked to see the Replica, but instead of confronting Riku, the Replica immediately leaves.