As anyone, Riku gets scared and doesn't like things such as fighting or bloodshed. After becoming a Chevalier, Riku wants to be by Saya more like Hagi and protect her from harm--even going as far as jumping into a battle and getting himself injured to save her. He may no longer be human, but he still remains with the same nature he has always had before his change.

Abilities: Being a Chevalier, Riku gains enhanced speed and strength, the ability to sense Chiropterans, and his body stopped aging.