Tsukuyomi (Zi-O)

Tsukuyomi (ツクヨミ) is a woman from the year 2068 who guides Sougo Tokiwa to become Kamen Rider Zi-O.

History
In 2068, Oma Zi-O was being attacked by the resistance, which Oma Zi-O manage to defeat them all with minimal effort. After declaring that no one will be able to beat him, Oma Zi-O snapped his fingers and kills almost all of the Resistance members, save from Tsukuyomi as she was pushed to a narrow rift by leader of the Resistance. She then decides to follow Geiz to 2018 to observe Sougo.

Personality
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 Oma Zi-O or not.

Arsenal

 * Faiz Phone X
 * Time Mazine

Relationships

 * Sougo Tokiwa/Kamen Rider Zi-O: Like Geiz, Tsukuyomi believes Sougo to be the evil tyrant Oma Zi-O and decided to go back in time to change his fate. At first, she seemed confused that a light-hearted teenager like Sougo could grow into an evil overlord. But that quickly changes when she notices his earnest motivation to become a king and his ability to activate the Zi-O Ridewatch.
 * Geiz Myoukouin/Kamen Rider Geiz: Geiz and Tsukuyomi were the on the side determined to defeat Oma Zi-O in the year 2068. But after witnessing many casualties, Geiz came to the conclusion that he needs to kill the man whom would become Oma Zi-O in the past. Tsukuyomi does not agree with this but Geiz goes back in time. She tries to protect Sougo from him, believing it's not right to kill him for something he hasn't even done yet.
 * Woz: Tsukuyomi had some knowledge about Woz beforehands, though what she currently know about him is currently unknown.

Portrayal
Tsukuyomi is portrayed by Shieri Ohata (大幡 しえり).

Etymology
Her name comes from the moon god  of the Shinto religion and Japanese myth.