Kamen Rider Zi-O

Demon King who possesses the power of all Riders

A time travel story depicting the finale of the Heisei Kamen Rider series. Holds the title of Demon King possessing the powers of all previous Heisei Kamen Riders, traveling through numerous timelines to fight.

Quotes

  • I will become the king of Kamen Riders!
  • Rejoice! The birth of a new king!!
  • Rejoice, the birth of the next king.
  • I have a feeling we can pull this off
  • Will I become the worst Demon King, or the absolute best Demon King?
  • If my friend Geiz is convinced I'll become the Demon King, then it's fine to be defeated by him

Trivia

  • "Zi-O" is an anagram of "prince (ōji)" and can be written in kanji as "Time King."
  • The Ziku-Driver's transformation gimmick features a 360-degree rotating buckle modeled after clock hands.
  • White Woz disappears upon the arrival of a new Oma Day.
  • Emphasizes crossover elements with Legend Riders (previous Heisei Riders).
  • Shirokuma Shin'ichirō reconstructed star system elements planned for Decade in this work.
  • "Kamen Rider Zi-O" was produced as the commemorative 20th work of the Heisei Kamen Rider series.

Alternate names

Kamen Rider Zi-O Zi-O Time King

Tags

Kamen Rider Heisei Kamen Rider Time Travel Time Travel Demon King Okuno Sō Tokusatsu Toei Ridewatch Armor Time

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Profile

Species
Human
Gender
Male
Birthday
April 28
Birth year
Early 2000s

Appearance

Overall appearance
Appearance based on a mechanical wristwatch featuring white and pearl white as the base colors, with accents of black, magenta, and blue. The mask is modeled after a clock face, and the antennae after clock hands.
Height
Approx. 200cm
Weight
Approx. 92kg
Eye color
Blue
Hair color
Black
Distinguishing features
  • Compound eyes display the word \"Rider\"
  • Antennae resemble the hour and minute hands of a clock
  • Body decorations modeled after a watch strap
  • Mask roughly modeled after a clock face
Iconic items
  • Ziku-Driver (transformation belt)
  • Zikan Girade (variable weapon)
  • Ridewatch
  • Ridewatch Holder
  • Ride Heisei Saber (weapon)
  • Time Majin (time-space transfer machine)

Personality and abilities

Core personality
Optimistic
Detailed personality
A positive third-year high school student with a clear dream of "becoming king," who accepts his own future while aiming to be the absolute best Demon King. Possesses deep empathy and tolerance toward history and people, avoids killing enemies recklessly, and cherishes his companions.
Keywords
  • Optimistic
  • Sense of responsibility
  • Sense of justice
  • Growth-oriented
  • Gentle
  • Kind-hearted
  • Strong will
  • Curiosity about time and space
Motto
I will become the king of Kamen Riders!
Talents
  • Excellent memory
  • Sense of justice
  • Positive thinking
  • Athletic ability
  • Sense of time
Skills
  • Combat techniques
  • Knowledge of history
  • Transformation and Armor Time operation
  • Future prediction (Zi-O II form)
Motivation
To become the Demon King of history and transform the future into the absolute best possible one.
Habits
Catchphrase: "I have a feeling we can pull this off."
Favorite foods
Sushi, Curry, Yakiniku, Sweets
Hobbies
Basketball, Video games, Historical research, Time with friends
Favorite colors
White, Pearl White, Black, Magenta, Blue
Favorite places
Kujigojidō Clock Shop, Hikarikemori High School

History

Backstory
Born April 28, 2000. Lost both parents in a bus accident during childhood and was raised by his great-uncle Junichirō. As a third-year high school student, he learns of his destined future to become the Demon King Oma Zi-O and rule the world, but strives to transform that fate into the absolute best possible one. Travels through time and space alongside Geiz and Tsukuyomi from the future, challenging Another Riders and Oma Zi-O.
Debut date
September 2, 2018
Work title
Kamen Rider Zi-O
Media type
Anime
Episode or chapter
EP01 - EP49

Zi-O's First Transformation

Significant event
Zi-O's First Transformation
Description
His awakening bearing the title of the future Demon King.

Encounter with Geiz

Significant event
Encounter with Geiz
Description
Grows through battles alongside Geiz who came from the future.

Confrontation with Oma Zi-O

Significant event
Confrontation with Oma Zi-O
Description
In the final battle, fights the worst Demon King of the future and forges a new future.

Birth of Zi-O Trinity

Significant event
Birth of Zi-O Trinity
Description
Powers up by acquiring the unified power of Zi-O, Geiz, and Woz.

Transformation into Grand Zi-O

Significant event
Transformation into Grand Zi-O
Description
Transforms into the strongest form housing the powers of all Heisei Riders.

Relationships

Tokiwa Junichirō

Guardian

Great-uncle who runs the Kujigojidō clock shop. Raises Sōgo.

Tokiwa Sōtarō

Father

Deceased. Died in a bus accident.

Tokiwa Naomi

Mother

Deceased. Died in a bus accident.

Myōkōin Geiz

Rival

Arrives as an assassin from the future but becomes a close friend who fights alongside.

Tsukuyomi

Teammate

Serves as a surveillance role but builds a deep bond as a female companion.

Woz

Enigmatic young man who also serves as the story's guide.

Kadoya Tsukasa

Rival

Central figure in crossovers with past Riders, serving as a formidable enemy.

Kakogawa Hiryū

Rival

Contractor of Another Zi-O and fated rival.

Hikarikemori High School

Hikarikemori High School: unknown

Resistance (2068)

Resistance (2068): unknown

Time Jacker

Time Jacker: unknown

Media appearances

Kamen Rider Zi-O

Anime / Protagonist

2018 TV series, all 49 episodes

Kamen Rider Zi-O: Over Quartzer

Movie / Protagonist

Released July 26, 2019

Kamen Rider Zi-O (manga version)

Manga / Protagonist

Kamen Rider Climax Scramble Zi-O

Game / Protagonist

Released November 29, 2018 for Nintendo Switch

Kamen Rider Zi-O Supplementary Plan

Web / Protagonist

Streaming from September 2018, all 16 episodes

Kamen Rider Zi-O NEXT TIME Geiz, Majesty

Vシネクスト / Protagonist

Released April 22, 2020

Voice cast and creators

Koyama Rikiya

Voice actor
Koyama Rikiya
Language
Japanese
Version or series
TV anime version, theatrical version, etc.
Notes
Ziku-Driver voice, Oma Zi-O voice, narration

Okuno Sō

Voice actor
Okuno Sō
Language
Japanese
Version or series
Tokiwa Sōgo / Kamen Rider Zi-O role
Notes
Lead actor

Oshita Gaku

Voice actor
Oshita Gaku
Language
Japanese
Version or series
Myōkōin Geiz / Kamen Rider Geiz role

Ōbata Shieri

Voice actor
Ōbata Shieri
Language
Japanese
Version or series
Tsukuyomi / Kamen Rider Tsukuyomi role

Watanabe Keisuke

Voice actor
Watanabe Keisuke
Language
Japanese
Version or series
Woz / Kamen Rider Woz role

Inoue Masahiro

Voice actor
Inoue Masahiro
Language
Japanese
Version or series
Kadoya Tsukasa / Kamen Rider Decade role
Notes
Special appearance

Sakuma Yū

Voice actor
Sakuma Yū
Language
Japanese
Version or series
Kakogawa Hiryū / Another Zi-O role

Kanazaki Kentarō

Voice actor
Kanazaki Kentarō
Language
Japanese
Version or series
Swartz role

Ishinomori Shōtarō

Creator name
Ishinomori Shōtarō
Role
Original author

Shimoyama Kento

Creator name
Shimoyama Kento
Role
Writer

Mōri Tsunehiro

Creator name
Mōri Tsunehiro
Role
Writer

Inoue Toshiki

Creator name
Inoue Toshiki
Role
Writer

Deguchi Hiroshi

Creator name
Deguchi Hiroshi
Role
Character designer

Shinozaki Tamotsu

Creator name
Shinozaki Tamotsu
Role
Character designer

Toei Tokusatsu Department

Creator name
Toei Tokusatsu Department
Role
Animation studio

Shirokuma Shin'ichirō

Creator name
Shirokuma Shin'ichirō
Role
Producer

Takebe Naomi

Creator name
Takebe Naomi
Role
Producer

Sasaki Motoyuki

Creator name
Sasaki Motoyuki
Role
Producer

Sahashi Toshihiko

Creator name
Sahashi Toshihiko
Role
musicComposer

Related goods

DX Ziku-Driver

Item name
DX Ziku-Driver
Category
Digital
Availability
Regular

DX Time Majin

Item name
DX Time Majin
Category
Figure
Availability
Regular

Sōdō Kamen Rider Zi-O

Item name
Sōdō Kamen Rider Zi-O
Category
Figure
Availability
Regular

DX Zikan Girade

Item name
DX Zikan Girade
Category
Accessory
Availability
Regular

Zi-O Ridewatch

Item name
Zi-O Ridewatch
Category
Accessory
Availability
Regular

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