|This article is about a/an ally in Kamen Rider Drive.|
Kyu Saijo (西城 究 Saijō Kyū) is a nerd who loves occult stuff. The Special Investigation Unit's Network researcher, his approach to cases can sometimes get him into some trouble with the team.
He is often seen with a doll.
Behind the scenes
Kyu Saijo is portrayed by Kenta Hamano (浜野 謙太 Hamano Kenta).