The character is an Agent from the Kitoralzus tribe that Hayato and his friends fight against.
Luckily, with the touch of his father’s Shinca (“evolve”) card, the bullet train he’s in transforms into a mighty robot — the Shinkalion E5 Hayabusa.
The official website for Shinkansen Henkei Robo Shinkalion the Animation, the television anime adaptation of Takara Tomy’s Shinkalion toy line, revealed on Saturday that Toshiki Masuda (My Hero Academia’s Eijirō Kirishima, Touken Ranbu: Hanamaru’s Kiyomitsu Kashū) is voicing a new character named Kairen.
In the anime’s story, Hayato and other children serve as conductors to pilot the Shinkalion.