Makoto Hikawa is a cop chosen to use the G3 System to battle the Lords, whom his superiors labeled as "the Unknown", and keep them from murdering people, Hikawa is an earnest, straight forward, and honorable man, though slightly naive and clumsy. Because he was regular human, the Lords usually ignore him; but sometimes are surprised that a normal human being can wield such power.
One day, while on patrol, Hikawa witnessed the Akatsuki being held by the El of the Sea, taking a boat to investigate and save all but one of its passengers. Because of his heroic role in the incident, which showed his skills in a crisis, Hikawa was assigned to the G3 Unit.
Hikawa took the G3 System on its first run during the Jaguar Lord case, resulting with a feral Agito damaging the Suit. But overtime, while aiding Agito, Hikawa managed to piece up the nature of the Lords' victims. But when Hōjō took his place as the G3's user, believing he got the position for being a hero, Hikawa got transferred to criminal investigations for a short while until he proved his skills by anticipating the Zebra Lords' next target, resuming his role in the G3 squad while decking Hōjō when he attempted to capture Agito.
Soon after stronger Unknown, and Hōjō's Victory One System, made themselves known, Hikawa was given the upgraded and G3-X Suit that is better suited for Unknown Combat and "perfect" in every way. However, the perfection was the flaw as AI would momentary takeover an impure wearer, as seen when the suit acted on Hikawa's deepest desires when it took control. After consulting her mentor, Ozawa installs a special inhibitor chip to regress the AI.
Hikawa finally learn the true identity of Agito in episode 39 when he de-transformed in front of him after being knocked by Another Agito, and Hikawa was visibly shocked to learn Agito is Shoichi, much to his disbelief makes him losing his cool(even getting in short argument with Ozawa and Omuro),disappointment on the revelation and can't accept it at first. Because the true identity of Agito he admired was far away from what he expected. This causing Hikawa to hesitant on meeting Shoichi. However after the two combining they effort to defeat Skelos Glaucus causing them to continue their usual relation. And Hikawa become more respecting Shoichi.
After Hōjō took over the G3 Unit, Hikawa was transferred back to Kagaki-ken. However, Hikawa couldn't leave just yet, so he and Ozawa take back the G3 Unit. Donning the G3-X one final time, Hikawa aids Agito and Gills in finishing off the Lords for good. By the next year, Hikawa leaves the G3 Unit and returns to being a normal officer of the law. The wallpaper originaly created by akemi. Please set up your display resolution with the same size as wallpaper dekstop before you fill up Kamen Rider G3-X wallpaper.