Based on the Odakyu Electric Railway's Romancecar limited express, this Hikarian character transforms from the distinctive train model into a robot. Its design mirrors the actual train, featuring a silver body accented with vermilion orange. Upon transformation, wings deploy from its back, functioning as sensors to detect temporal anomalies and energy fluctuations. Serving in the Hikarian Special Vehicle Corps, Romancecar specializes in support and reconnaissance. It frequently collaborates with other specialized Hikarians like Fire N'ex and Sniper Sonic on missions. A key combat ability allows Romancecar to combine with Shadow X and Sphinx, forming the powerful composite mecha God X. This combination significantly boosts offensive and defensive power during confrontations with the Blatcher Gang. Romancecar maintains a dual existence, operating as a conventional passenger train during peaceful times and transforming into a combat robot when threats emerge. This aligns with the broader depiction of Hikarians operating within human transportation infrastructure while concealing their robotic identities.