Riku is the biological child of Yorza Alferix who was created through a cloning system by combining Yorza's cells and the cells of a random woman. Just before the power of the Veldorian squad fell into Ezra's hands, Riku took another step to hide with several of his loyal followers.
However, they didn't know that Ezra was also created purely by Yorza with the same cells. Because of this, Ezra managed to track Riku's location easily. His arrival did not trigger death, in fact Ezra wanted Riku...
