Ichiro

Ichiro is Jiro's "older brother", the first Kikaider built by Komonji in case of dire emergencies. Ichiro lacks a conscience circuit, thus lacks the same type of compassion Jiro has. Ichiro seemed to act like a little kid at first, with a passion for a good fight, but he matured eventually and decides to help Jiro in the fight against Shadow. His weapons are his machine gun arm and the sunlight beam. He plays a trumpet and rides the motorcycle and sidecar DoubleMachine.

(Source: AbsoluteAnime)