Later on, he teamed up with Shinobi when the Niji no Hebi targeted her. Much like the other Future Kamen Riders, Isamichi also has his own Mirai Driver, dubbed the . As Hattari, and similarly to Shinobi, he utilizes elemental attacks and a ninjatō, though he can also summon ninjas to aid him. His finisher is the . Isamichi Konjō is portrayed by .   is Rentarō's mentor who elected the youth to become Kamen Rider Shinobi after saving him. Having observed the Kagura family as a frog caricature and despite choosing him, Gamano views Rentarō as expendable to his agenda and left to recruit several more ninja Riders. Master Gamano is portrayed by .   is a mysterious ninja from an evil ninja faction known as who was responsible for turning Japan into a ninja-based country through the government. While still unaware of Iroha being their group's princess, Yaminin developed an affection for her and infiltrated a competition held by the Konjō Company to kidnap her. After being defeated and spared by Shinobi and Hattari, Yaminin promised to return in the future. Yaminin is voiced by .   is a dying young woman who was accidentally hit by her boyfriend Tatsuya in a car accident and was left hospitalized. After he became Another Ryuki and her soul became trapped in the Mirror World, she set up a Rider War to find someone to stop him. Before she died, she begged Shinji Kido to save Tatsuya. Sara is portrayed by .   is a young man who after accidentally hit his girlfriend Sara in a car accident. Recognizing his plight, Kamen Rider Odin turned him into the Another Rider, so he could steal people's souls in order to save Sara with a soul gem. After learning Sara's soul had become trapped in the Mirror World and that she had set up a Rider War to find someone to stop him, Tatsuya became disheartened; realizing all he had done was for naught as he was only hurting Sara further. When she died, Odin saw no more use for his pawn and sent him into a berserker state before Zi-O saved him. As Another Ryuki, he has similar powers as Another Ryuga and his original template. Tatsuya Kanō is portrayed by .