Naoya Kaido
Naoya Kaido (海堂 直也, Kaidō Naoya?) is a young man sired the Snake Orphnoch by Eiichi Toda, the temporary chief of Smart Brain, to make an example to Kiba and Yuka of how Orphnochs must make allies. He is an overly eccentric person prone to incredibly fast speeches and constant mood swings. He played the guitar in his younger days, but sabotage by his teacher destroyed some of the motorskills in his left hand, forcing him to abandon his music. After struggling with his nature as an Orphnoch, Kaido ends up living with Kiba and Yuka, although he is the least concerned about protecting humans. At times he sides with Smart Brain over Kiba and Yuka, but his powerful conscience often stops him from committing heinous acts at the last second.
Naoya Kaido is portrayed by Mitsuru Karahashi (唐橋 充, Karahashi Mitsuru?) who later played Juzo Fuwa in Samurai Sentai Shinkenger.
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