A mature youth who still enjoys childish things, Ken is constantly trying to prove himself to his seniors. He acts seriously and respectfully, but is kind and well kept. Outside of battle, he enjoys watching Neo-Featherman (Power Rangers Ripoff) and enjoys the company of Koromaru. In elementary school, he doesn't seem to have any friends his age. He is very independent and seems to rely solely on himself, rather than asking for help. This could be due to his witnessing the murder of his mother during the dark hour, which forced him to mature rather quickly. Since the act took place in the shadows, not even the police believed his explanation of the events.