Sougo Tokiwa (Prime Reality)

Sougo Tokiwa (常磐ソウゴ), is an 18-year-old high school student who is visited by Tsukuyomi and Woz from 50 years in the future and learns that he is destined to become the tyrannical ruler of their time, Ohma Zi-O. With this knowledge, he makes it his goal to be a great king through kindness by becoming Kamen Rider Zi-O (仮面ライダージオウ).

Skills

 * Vast Historical Knowledge: According to Tsukuyomi, Sougo excels in history.

Weaknesses

 * Poor Academic Performance: According to Tsukuyomi, Sougo is helpless in science and curricular subjects in school.

Devices

 * Ziku Driver - Transformation device
 * Ride Watches - Transformation trinkets

Weapons
Handheld weapons:
 * Zikan Girade - Zi-O's personal weapon

Vehicles

 * Ride Striker
 * Time Mazine

Portrayal
Sougo Tokiwa is portrayed by So Okuno (奥野 壮).

Rider No.
As the leading rider protagonist of Kamen Rider Zi-O, Zi-O is labelled Kamen Rider #35 (仮面ライダー35号) and Heisei Rider #20 (平成ライダー20号).

Etymology
Sougo Tokiwa's name is play on, the place where Shotaro Ishinomori lived and started his manga career during 1956 to 1961. "Tokiwa" also carries the word Toki (とき), which can be translated into time when it is written in kanji "時".