Jō Itsutsubashi, alongside his twin brother Gin, operates from the Shinkansen Ultra Evolution Institute's West Japan Command Office Kyoto Branch while residing in Yamaguchi Prefecture. He pilots the specialized Shinkalion 700 Nozomi. This unit, modeled after the Shinkansen 700 Series train, is smaller in scale than other Shinkalions but specializes in close melee combat, wielding the Shinca Blade for precision strikes. Its Shinkansen mode features a primarily white livery with blue stripes; transformed into its humanoid configuration, it retains the train's nose as its chest.

Jō and Gin mirror each other in personality, displaying few individual quirks but high reliability in team operations. They share a fiery enthusiasm for fish, possessing the uncanny ability to distinguish wild-caught from farm-raised specimens and a strong preference for the former. Discussions or meals involving fish can make them notably animated. This passion intersects with their work alongside teammate Takatora Kirishima. Initially, their preference for improvised tactics clashed with Takatora's approach, creating friction that hindered the Shinkalion Trinity combination. Hayato Hayasugi's intervention resolved this conflict, leading to a more cohesive working relationship where the twins actively assisted Takatora in sourcing fish for his recipes.

Jō and Gin appear in the film *Shinkansen Henkei Robo Shinkalion the Movie: The Marvelous Fast ALFA-X That Comes From the Future*, joining drivers from seven branches—Hokkaido, Yamagata, Ōmiya, Nagoya, Kyoto, and Moji—to confront a new extraterrestrial threat, highlighting their integration into the broader defense network.