Icon-zi-o.png This article is about a/an Rider in Kamen Rider Zi-O.

"Saving the world (sekai), and obtaining the right answer (seikai)! Question: I will fight you, O or X? The right answer is 'O'."
―Mondo's 1st pre-proclamation against Zi-O and Geiz[src]

"Saving the world (sekai), and obtaining the right answer (seikai)! Kamen Rider Quiz!"
―Mondo's pre-battle catchphrase[src]

Mondo Douan (堂安 主水 Dōan Mondo) is Kamen Rider Quiz (仮面ライダークイズ Kamen Raidā Kuizu), a Rider from an alternate 2040 that appears in Kamen Rider Zi-O.

Character History

Mondo is the son of Tamotsu Douan and an unnamed woman, but Tamotsu was a genius scientist who was so obsessed with his work that he left his son and wife, the latter who eventually passed away. In the year 2040 of the non-Ohma Zi-O timeline, when his mother fell ill, Mondo was brought to the year 2019 by White Woz to search for his father and discover if he ever loved his wife so she could die in peace with the answer. Unfortunately, his arrival was a set up by White Woz to obtain his power for Geiz and inadvertently gives Time Jacker Ora the opportunity to turn Tamotsu into Another Quiz, though somehow without erasing Mondo's powers or memories as Kamen Rider Quiz, as usually happens. He fights against Zi-O and Geiz so he can face Another Quiz himself, easily defeating them with his confusing question-based powers, but Ora interferes to let Another Quiz escape.

While having his watch (a keepsake from Tamotsu in the future) fixed by Junichiro, Mondo meets the Riders again and takes refuge in the 9 5 DO for his stay in this time, explaining why he's here. He easily wins that evening's trivia game in a landslide. The next day, Mondo confronts his father again after White Woz defeated Tamotsu, but he tells Geiz to take Mondo's powers. The Quiz Shock 2040

Mondo fights Geiz, but Sougo has Woz warp him away. He finds that Junichiro couldn't fix his father's watch, but says it's okay. He reasserts to Sougo that he is only here for his mother's sake, not his own, but is clearly distressed and, as Sougo points out, still carries the broken watch.

Later, Mondo faces Another Quiz alone after Geiz fights and occupies Sougo; Geiz soon enters the battle only to fight Another Quiz instead of Mondo, having chosen to let him find his answer instead of taking his powers. Mondo and Geiz defeat Another Quiz, Mondo identifying himself to Tamotsu, reveals Tamotsu's bleak fate, and asks if there was anyone that Tamotsu ever truly loved. Tamotsu's answer: Mondo's mother. Mondo is satisfied, but Ora turns Tamotsu into Another Quiz again, Quiz's original powers not having been enough to destroy the Another Quiz Ridewatch. Before Mondo can transform again, however, White Woz steals his powers into a Blank Miridewatch directly, using it to finally defeat Another Quiz. Seeing that his watch has started ticking again, Mondo lets White Woz return him to the future, seemingly with his memories intact. Final Answer? 2040

Video Game appearances

Kamen Rider Buttobasoul

Kamen Rider Quiz medal

Kamen Rider Quiz is a playable character with other Kamen Rider of Showa Heisei and Reiwa in Kamen Rider Buttobasoul.


Mondo is a highly prideful quiz master who is good in not only answering quiz games, but forcing his opponents to take part in his riddles. Beneath that bravado is a young man who has suffered greatly following his father's abandonment that also affected him and his mother, which explains why he came to 2019 to ask Tamotsu's younger self if he ever truly loved his family. Typically toying with his opponents through his quiz-based fighting style, his questions become stingingly personal when facing his father's Another Rider form.

Powers and Abilities


  • Time Alteration Immunity: For unknown reasons, Mondo's memories and powers as Kamen Rider Quiz remain unaffected by the formation of both Another Quiz and the Quiz Miridewatch, unlike all other Riders whose powers are stolen to be used as such. This may be due to external factors such as White Woz's interference, but it is left unexplained.[1]


  • Gifted Intellect: Befitting his Rider motif, Mondo is rather brilliant, being able to overwhelmingly win the quiz game conducted by Junichiro.

Kamen Rider Quiz

Kamen Rider Quiz


"Fashion! Passion! Question! Quiz!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 203.0 cm[2]
  • Rider Weight: 99.9 kg[2]

Ability Parameters

  • Punching Power: 7.6 t[2]
  • Kicking Power: 12.2 t[2]
  • Maximum Jump Height: 28.4 m[2]
  • Maximum Running Speed: 100 m per 4.4 sec[2]

Mondo Douan transforms into Kamen Rider Quiz (仮面ライダークイズ Kamen Raidā Kuizu) by slotting the Quiz Topper into the Quizdriver. While Kamen Rider Quiz's stats are slightly lower than Zi-O or Geiz, aside from running power, which is slightly higher, Quiz's main fighting style is to ask opponents true/false questions in battle. If an opponent is unable to answer him correctly, they will receive a painful electric shock.

Kamen Rider Quiz consists of the following parts:

  • Think Header (シンクヘッダー Shinku Heddā) - The helmet.
    • Million Question (ミリオンクエスチョン Mirion Kuesuchon) - The big question mark-shaped brainpower source on the forehead. It creates a pseudo brain-machine interface that allows the user to control suit functions by thought. Additionally, it is an archive that contains an insane amount of questions and quizzes asked around the world in the past.
    • Pinto Eyesers (ピントアイザー Pinto Aizā) - The question mark shaped visual devices. They are capable of seeing extremely fine detail, and can even record 180-digit numbers shown in 0.1 seconds.
    • IQ Dome (IQドーム IQ Dōmu) - The Think Header's exterior. Its surface has a magnetic shield coating applied to it, protecting the Think Header from physical attacks and harmful electromagnetic waves. The internal temperature is always kept around 5°C thanks to an inbuilt cooling device.
    • Handlet Listenisers (ハンドレットリスナイザー Handoretto Risunaizā) - The listening devices at the sides of the Think Header. They are capable of picking up to 100 sounds at once, and can deduce the possibility of what each sound is with a high degree of accuracy. Sends sounds to the IQ Dome.
    • Announce Speaker (アナウンスピーカー Anaunsupīkā) - The mouthplate. It automatically adjusts its output depending on the current situation, allowing the user to be heard at any time in any place. It is capable of very high sound quality.
  • Result Armor (リザルトアーマー Rizaruto Āmā) - The chest armor. The two circular Result Presenters (リザルトプレゼンター Rizaruto Purezentā) on it will electrically shock opponents who answer Kamen Rider Quiz's questions incorrectly via the Cathode Bracelets. The Result Armor boasts extremely high defense power, and electric shocks cannot be overwhelmed by physical attacks.
  • Circle Side Shoulder (サークルサイドショルダー Sākuru Saido Shorudā) - The right shoulder pad. The built-in All Genre Searcher (オールジャンルサーチャー ōru Janru Sāchā) device constantly monitors the surrounding environment, sending collected data to the Million Question.
  • Cross Side Shoulder (クロスサイドショルダー Kurosu Saido Shorudā) - The left shoulder pad. The built-in Discover Strange (ディスカバーストレンジ Disukabā Sutorenji) device constantly monitors opponents, sending collected data to the Million Question.
  • Which One Suit (ウィッチワンスーツ Uitchi Wan Sūtsu) - The bodysuit. Energy from the Quizdriver is violently amplified by running it across both the 'circle' and 'cross' sides of the suit. Additionally, an artificial neuron system connects the head to various parts of the suit, allowing the user to control suit functions by thought.
  • Fastline Writer (ファストラインライター Fasutorain Raitā) - The right arm. It contains a mechanism called Flipper Light (フィリッパーライト Firippā Raito) which allows Quiz to perform delicate operations.
  • Fastline Pusher (ファストラインプッシャー Fasutorain Pusshā) - The left arm. It contains a mechanism called Button Pressure (ボタンプレッシャー Botan Puresshā) which strenghens Quiz's striking power.
  • Circle Side Transer (サークルサイドトランサー Sākuru Saido Toransā) - The right forearm armor. It has a transformer mechanism that changes the magnitude and voltage before sending it to the Cathode Bracelet.
  • Cross Side Transer (クロスサイドトランサー Kurosu Saido Toransā) - The left forearm armor. It has a transformer mechanism that changes the magnitude and voltage before sending it to the Cathode Bracelet.
  • Cathode Bracelet (カソードブレスレット Kasōdo Buresuretto) - The golden bracelets. They control electric fields and release shocks of various shapes.
  • Hunting Hammers (ハンティングハンマー Hantingu Hanmā) - The hands. It's high degree of hardness and enhanced gripping strength makes it hard for enemies to escape from it's grip. When charged with electricity, the Hunting Hammers will glow golden.
  • Fastline Dashers (ファストラインダッシャー Fasutorain Dasshā) - The legs. A special device called Cheetah's Run (チーターズラン Chītāzu Ran) is built in, raising running power.
  • Guard Panel 40 (ガードパネル40 Gādo Paneru 40) - The kneepads and shin protectors. It is composed of 25 kinds of 4 types of armor materials, and can reduce any impact done to it by one-fourth.
  • Jump Up Shoes (ジャンプアップシューズ Janpu Appu Shūzu) - The feet. Jumping power is doubled by jumping at a steady pace, allowing a strong kick to be released. However, any misstep in the pacing will result in a loss of jumping power.


  • Final Quiz Flash (ファイナルクイズフラッシュ[2] Fainaru Kuizu Furasshu): After asking a true/false question, Quiz jumps in the air only to be hidden by a giant sign with two panels marked "O" and "X" respectively. He then breaks through the correct answer's panel with his foot and hits the enemy with a spinning kick carrying projections of both symbols and an "!" on impact. Another version sees him and Geiz do a double rider kick against the enemy.

Appearances: Zi-O Episode 18-20


Legend Rider Devices

―Activation announcement[src]

"Save the world! Answer correctly! Kamen Rider Quiz! (救えよ世界!答えよ正解!仮面ライダークイズ! Sukueyo sekai! Kotaeyo seikai! Kamen Raidā Kuizu!)"
―Secondary activation announcement[src]

"Action! Touei! Future Time! (Game show fanfare with correct answer beeping) Fashion! Passion! Question! Futurering Quiz! Quiz!"
―Transformation announcement[src]

"Beyond The Time! Quiz Shock Break!"
―Finisher announcement[src]

"Future Time! Fashion! Passion! Question! Futurering Quiz! Quiz!"
―Transformation announcement with Ziku-Driver[src]

"Beyond the Time!""
―Finisher announcement with Ziku-Driver[src]

Quiz Miridewatch (クイズミライドウォッチ Kuizu Miraido Wotchi): Based on Kamen Rider Quiz, the Quiz Miridewatch provides Woz access to Futurering Quiz.

"Quiz! (Distorted digital beeping)"
―Activation announcement[src]

―Another Rider transformation announcement[src]

"Another Time! Quiz!"
―Transformation announcement in the Ziku-Driver's right-hand slot[src]

"(Right-hand Ridewatch's announcement)! Another Time! Quiz!"
―Transformation announcement in the Ziku-Driver's left-hand slot[src]

"Finish Time! Zi-O Another Time (Break/Burst/Jack)!"
―Finisher announcement in left-hand slot[src]

Quiz Anotherwatch

Another Quiz Watch (アナザークイズウォッチ Anazā Kuizu Wotchi): A twisted version of Quiz Ridewatch used to transform into Another Quiz.

Behind the Scenes


Mondo Douan is portrayed by Katsuhiro Suzuki, who previously portrayed Hiromu Sakurada/Red BusterIcon-crosswiki.png in Tokumei Sentai Go-BustersIcon-crosswiki.png. As Kamen Rider Quiz, his suit actor is Yuji Nakata (中田 裕士 Nakata Yūji)[3].


Mondo Douan's name is a homophone of the Japanese words for Question & Answer (問答 Mondō) and Solution (答案 Tōan).

Concept Art

Concept art of Kamen rider Quiz.


  • Quiz's helmet is retooled from Kamen Rider Ghost, while his body is retooled from the Ride-Players.
  • The "O" and "X" symbols on Kamen Rider Quiz's Chest represent "true" and "false" respectively in the questions he asks for his attacks.
  • Mondo has some similarities to Kamen Rider Double and Kamen Rider Build.
  • Although never explictly confirmed, Quiz might be the first Future Rider to not be a creation of Sougo Tokiwa's dreams as both Kamen Rider Shinobi and Kamen Rider Kikai were later revealed to be subconsciously created by him.
    • He is also the only Zi-O Future Rider to have his name(and his transformation jingle) be derived from an English word as all the other Zi-O Future Riders have names derived from Japanese words.



Sougo Tokiwa (Over Quartzer) - Geiz Myokoin - Woz (black, white, red) - Tsukuyomi
Other Sougo Tokiwa variations
Ohma Zi-O - Mirror World - Leader of Quartzer - B - C - D - E - F - Robot Sougo - True Sougo
Future Kamen Riders
2022 (Rentaro Kagura - Isamichi Konjo) - 2040 (Mondo Douan) - 2121 (Rento Makina) - Kamen Rider Ginga
Rider Time Ryuki Riders
Ishihashi - Tozuka - Kimura - Ishida - Abyss - Odin
Another World Riders
G4 - Fuma - Dark Ghost - Rey - Katsumi Daido - White Woz - Yuuki
Other Riders
G3 Team - Shun Kageyama (Worm)
Movie-exclusive Riders
SOUGO Tokiwa - Kagen - Jogen - Soreo Hiden
Stageshow-exclusive Riders
Hiryu Kakogawa - Red Woz
Transformation Devices
Ziku-Driver - Ohma Zi-O Driver - Beyondriver - Miraidriver (Shinobi, Hattari, Quiz, Kikai, Ginga) - NeoDecadriver - NeoDiendriver - K-Touch 21
Ridewatches - Miridewatches- Ridewatch Holder - Ridewatch Daizer - Faizphone X - Taka Watchroid - Kodama Suika Arms
Zikan Girade - Zikan Zax - Ride HeiSaber - Zikan Despear - Saikyo Girade - Zikan Jaclaw - Barlckxs' Sword
Ride Striker - Time Mazine - Dai Mazine - Karakuri Robos (Kurogane Oogama - Unnamed Wasp-based Karakuri Robo)
Rider Armors - Oma Advent Calendar - Future Note - Time Finishers
9 5 DO: Geiz Myokoin - Tsukuyomi - Junichiro Tokiwa
Futaros - Ataru Hisanaga - Shingo Hisanaga - Iroha Kagura - Master Gamano - Sara - Ms. Sailor - Oda Nobunaga - Clara Steinbelt - Gyuzo - Pietro - Resistance Captain
Kuuga: Yusuke Godai
Agito: Shoichi Tsugami - Takahiro Omuro
Ryuki: Shinji Kido - Dark Shinji - Ren Akiyama - Takeshi Asakura - Miyuki Tezuka - Jun Shibaura - Goro Yura
555: Takumi Inui - Masato Kusaka
Blade: Kazuma Kenzaki - Hajime Aikawa
Hibiki: Hitoshi Hidaka - Tomizo Todayama - Kyosuke Kiriya
Kabuto: Soji Tendo - Arata Kagami - So Yaguruma
THE FIRST/THE NEXT: Takeshi Hongo - Katsuhiko Yano - Shiro Kazami
Den-O: Ryotaro Nogami - Yuto Sakurai
Kiva: Wataru Kurenai - Jiro
Decade: Tsukasa Kadoya - Daiki Kaito - Yusuke Onodera - Natsumi Hikari
G: Goro
W: Philip & Shotaro Hidari - Ryu Terui
OOO: Eiji Hino - Michal Minato - Akira Date - Shintaro Goto
Fourze: Gentaro Kisaragi
Wizard: Haruto Soma - Kosuke Nitoh
Gaim: Kouta Kazuraba - Kaito Kumon - Takatora Kureshima
Drive: Shinnosuke Tomari - Go Shijima - Chase - Brain
Ghost: Takeru Tenkuji - Makoto Fukami
Kuuga (manga): Yusuke Godai
Amazons: Haruka Mizusawa - Jin Takayama
Ex-Aid: Emu Hojo - Hiiro Kagami - Kiriya Kujo - Kuroto Dan - Masamune Dan
Kamen Sentai Gorider: Aka-Rider - Ao-Rider - Ki-Rider - Momo-Rider - Mido-Rider
Build: Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto
Zero-One: Aruto Hiden - Isamu Fuwa - Yua Yaiba - Jin - Horobi
Chuta Ohsugi - Daita Kondou - Chikao Nezu - Hina Izumi - Shibuya Hachioji - Narita Kisarazu - Misora Isurugi - Master of Fumen - Owner - Momotaros - Urataros - Kintaros - Ryutaros - Eri Ogawa - Daisuke Okubo - Amane Kurihara - Mana Kazaya - Riki - Ramon - Deneb - Krim Steinbelt - Takeshi Kinashi - Izu - Shesta - Jun Fukuzoe - Sanzo Yamashita - Narutaki
Swartz - Heure - Ora
Movie Exclusive
Tid - Finis
SOUGO Tokiwa - Kagen - Jogen - Woz
Another Build - Another Ex-Aid - Another Fourze - Another Faiz - Another Wizard - Another OOO - Another Gaim - Another Ghost - Another Double - Another Den-O - Another Kuuga - Another Shinobi - Another Quiz - Another Ryuga - Another Kikai - Another Zi-O (II) - Another Ryuki - Another Blade - Another Agito (troops) - Another Hibiki - Another Kiva - Another Kabuto - Another Drive - Another Decade
Movie-exclusive Another Riders
Another Zero-One - Another 1 - Another Diend
Stageshow-exclusive Another Riders
Another Rider - No Rider - Another Ohma Zi-O
Other Villains
Kasshine - Humanoise - Worms - Elementary Inves - Trilobite Magia - Battle Magia
Niji no Hebi: Yaminin - Dustards
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