Mikio Jinno

Mikio Jinno is a senior detective of the Futo Police Department partnered with Shun Makura, and a friend of Shotaro Hidari.

Personality
Despite being a senior detective, Jinno is very gullible, falling for the same trick everytime, until he was arrested during the Jewel Dopant case for a crime he didn't commit and vowed to be less gullible after he was cleared of his charges.

He often discusses cases with his friend Shotaro, unaware of the fact that he is one of Kamen Rider Double's halves.

Jinno also carries a light-blue back scratcher with him and is almost never seen without it.