Associate Tsukuyomi/Alpina

Tsukuyomi is a woman from the Year 2068 who guides Sougo Tokiwa to become Kamen Rider Zi-O.

Description
Tsukuyomi is a no-nonsense individual, but is at least more friendly than Geiz as she tries to convince Sougo several times to not transform into Zi-O for the sake of the future, even willingly saving him from Geiz when the latter attempts to kill him. Tsukuyomi also shown to be quite the observant person as she analyzed Sougo's biography and actions thoroughly to determine whether he's really the Ohma Zi-O or not.

Crossover War Heroes: Iron-Blooded Kid Warriors
Tsukuyomi made a first appearance to rescue Sento Kiryu and the gang from being caught by the police. Rikka is later seen waiting for Luigi and his friends outside a food stall. She then proceeds to befriend Milinda and her friends, to which Luigi and Sento get upset. Tsukuyomi ignores them and proceeds to lead them to Princess Shayla's House Lair, where she is treating the woman who was injured. When Sento asks Shayla whether treating humans is uncomfortable, Tsukuyomi hits him and tells him off for it, but Princess Shayla chastises him gently. She then sits quietly until Luigi, who is surprised that Princess Shayla had turned Tsukuyomi into a Kamen Rider with the help of superhuman scientists, asks for Shayla's age, to which she reacts again. She reprimands the heroes again, more severely this time, and she then sits quietly.

Allies and enemies
Allies: Luigi Latorre, 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, Arashi (Zoids), Midori, Heero Yuy, Kira Yamato, Setsuna F. Seiei, Bugs Bunny, Marika Kato, Milinda Brantini, 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, Yūna Yūki, Mimori Tōgō, Fu Inubouzaki, Itsuki Inubouzaki, Karin Miyoshi, Sonoko Nogi, Hiroki Nagase, Masaru Ooyama/Akaba, Syuuya Aikawa/Aoba, Syoukichi Mihara/Kiba, Futaba Ichinose, Chitose Karasuma, Kenzo Tenma, Kudelia Aina Bernstein, Atra Mixta, Wataru Kurenai/Kamen Rider Kiva, Kivat-bat the 3rd, Kate Green, Gentoku Himuro/Night Rogue/Kamen Rider Rogue, Rinna Sawagami, Nariaki Utsumi, Akari Tsukimura, Leena Toros, Aila Jyrkiainen, Mitsuya Majime, Hester Shaw, Kouhei Araki, Jiro, Ramon, Riki, Leo Conrad, Sally Land, Seraphimon, Cherubimon (Good), Ophanimon, Guardian Eatos, Kuroto Dan/Kamen Rider Genm, Knight Unryuji, Rona Tsunomori, Rei Kiriyama, Carly Carmine, Naoto Kurogane, Hina Amano, Yugi Muto/Yami Yugi (Atem), Joey Wheeler, Tristan Taylor, Téa Gardner, Aichi Sendou, Ruko Kominato, Dan Bashin, Gao Mikado, Ayato Kamina, Yuinshiel Asteria, Rena Asteria, Knight Unryuji, Kuroto Dan/Kamen Rider Genm, Hazuki Kagimura, Touma Kamiyama/Kamen Rider Saber, Rintaro Shindo/Kamen Rider Blaze, Kento Fukamiya/Kamen Rider Espada, Ren Akamichi/Kamen Rider Kenzan, Ryo Ogami/Kamen Rider Buster, Grizzly Bear, Panda Bear, Ice Bear