Japanese Victor Frankenstein
The secretary to Gentoku Himuro and another aide to the Prime Minister of Touto, Utsumi is rarely seen without his boss.
Not much known about Utsumi's personality other than being a loyal assistant to Gentoku, even when his superior is revealed to be manipulating the Touto government from behind the scenes as the leader of Faust.
Along with Gentoku Himuro, Nariaki Utsumi first appeared as one of Wataru Kurenai's fellow workers and followers. He easily instructed and mentored Hester Shaw and the Hero Club Heroines to improve themselves better in order kill the enemies one by one. However, he and Kiva's followers fought Tekkadan. The fight was excused. He and Wataru's followers need to notify the truths and ideals that they have done foolish things. After the defeat of The Bruters and the death of Yan Baihu, he and the workers must work together to repair the damged remains of Gundam Gusion. When he and the heroes arrive on earth. Nariaki and the rest many heroes spend time in order for themselves to be relaxed.
Allies and Enemies
Allies: Hibiki Tachibana, Tsubasa Kazanari, Chris Yukine, Maria Cadenzavna Eve, Shirabe Tsukuyomi, Kirika Akatsuki, Miku Kohinata, Souji Tendou/Kamen Rider Kabuto, Arata Kagami/Kamen Rider Gatack, Ruuji Familon, Midori, Arashi, Heero Yuy, Kira Yamato, Setsuna F. Seiei, Bugs Bunny, Sento Kiryu/Kamen Rider Build, Milinda Brantini, Dominic Toretto, Greg Heffley, Tsubomi Kido, Wade Owen Watts, Shouya Ishida, Hei (Darker than Black), Ryuga Banjou/Kamen Rider Cross-Z, Soichi Isurugi, Misora Isurugi, Sawa Takigawa, Eiji Hino/Kamen Rider OOO, Professor Kukui, Professor Burnet, Kouta Kazuraba/Kamen Rider Gaim, Kaito Kumon/Kamen Rider Baron, Mitsuzane Kureshima/Kamen Rider Ryugen, Takatora Kureshima/Kamen Rider Zangetsu/Zangetsu Shin, Suzuka Kamiki, Gas-House Gorillas, Kazumi Sawatari/Kamen Rider Grease, He Jin, Hyde Kido, Bastion Misawa, Horrid Henry, Mirei Mikagura, Etemon, Volcamon, Futaba Ichinose, Chitose Karasuma, Kenzo Tenma, Kudelia Aina Bernstein, Atra Mixta, Leo Conrad, Sally Land
Enemies: Gunther Prozen, Thaddeus Valentine, Hajime Busuzima, Thornheart (deceased; killed by Milinda Brantini), Dr. Ellie Staple, Kain (RESTOL Special Rescue Squad) (deceased), Flinty McCallahan (deceased), Greta Hideg, Matori, Dr. Zager, Gozu (Pokemon), Mikie Okamine, Masakuni Mido, Jail Scaglietti, Gabby Jay, Alva,Kuroto Dan/Kamen Rider Genm (formerly), Rustal Elion, Carta Issue, Iok Kujan, Gallus Bauduin, Elek Falk, Iznario Fareed, Nemo Baklazan, Julieta Juris, Wolf Rocky, Knight Unryuji (formerly), Shia Kijima, Wilfrid Kijima, Saga Adou, Swartz, Uhr, Ora, Tid