This article is about a/an Rider in Kamen Rider Zi-O.

"Body of steel with a hot heart! Kamen Rider Kikai!"
―Kamen Rider Kikai's self-introduction.[src]

"Are you... a machine? Or... a human?!"
―Kikai after being brainwashed[src]

Rento Makina (真紀那 レント Makina Rento) [1] is Kamen Rider Kikai (仮面ライダーキカイ Kamen Raidā Kikai), a rider from the year 2121 that appears in Kamen Rider Zi-O.

Character History


Sougo Robot Toy

The true origin of Rento was a robot toy from Sougo Tokiwa's childhood, who he considered as his sole "companion" after being secluded from other children who ridiculed his dream as a king. This toy was written with the English phrase "WILL BE THE KING" on its back, as Junichiro Tokiwa rediscovered it years later and fixed the toy.Best Friend 2121

Year 2121

As a result of Sougo's growing power as Oma Zi-O, the year 2121 came into existence with Rento being born from Sougo's robot toy. Rento started as a fellow Humanoise who managed to conquer Earth and suppressing the humans but switched sides when befriending Maruko and a group of children. Since then, Rento defended the humans and use his recharging period to entertain his friends.Best Friend 2121

When Sougo receives his premonition dreams, he was teleported to the future as Rento protects him and joins with the children. [2] During his charging attempt, the satellite he recharged from was hacked and reverted Rento/Kikai into his primary Humanoise directive.It's Kikai! 2121 After briefly attacking Sougo, Kikai ambushed his own group at a human refugee camp alongside other Humanoise until Zi-O II disabled him with Twice Time Break. While sleeping during his make-up test, Sougo used the password from Maruko (Will Be the BFF) to resurrect Rento back into his original programming.

"Thank you Sougo. I knew you were my BFF."
―Rento expressing his gratitude.[src]

Once restored, Rento thanked him, firming his believe that Sougo is his friend as he and the children waved goodbye to Sougo, who reawakened long enough to pass his test.Best Friend 2121

Powers and Abilities

  • Robot Physiology: As Rento is a fellow Humanoise, he shares the same ability as they are.
  • Time Alteration Immunity: Rento's memories and powers as Kamen Rider Kikai remain unaffected by the formation of both Another Kikai and the Kikai Miridewatch, unlike all other Riders whose powers are stolen to be used as such. Considering that Rento and Another Kikai are simultaneously created by Sougo's subconscious, both beings can exist at the same time.


  • Robot Physiology: Unfortunately being a Humanoise, Rento is also subjected to the same weakness as they are.
    • Energy Requirement: Rento needs solar energy from satellite in order to move, transform, and many other things. If his energy is low, he can't move his body properly.
    • Reprogramming: Through the same satellite he recharged from, Rento can also be reprogrammed should the satellite be hacked, reverting him into his prime Humanoise directive. However, his programming could be undone by typing a code ("Will Be The BFF") from the Kikai Metal Suit Jacket, which will shows a holographic keyboard image.

Kamen Rider Kikai

Kamen Rider Kikai


"Dekai! Hakai! Goukai! Kamen Rider Kikai!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 210.5 cm.
  • Rider Weight: 1.8 t.

Ability Parameters

  • Punching Power: 20.4 t.
  • Kicking Power: 58.3 t.
  • Maximum Jump Height: 20.9 m.
  • Maximum Running Speed: 100 m. per 7.5 sec.

Rento transforms into Kamen Rider Kikai (仮面ライダーキカイ Kamen Raidā Kikai) by inserting the Spannerder and Screwder together at the center of the Kikai Driver.

Kamen Rider Kikai's suit consists of the following parts:

  • Kikai Head Cab (キカイヘッドキャブ Kikai Heddo Kyabu) - the head.
    • Metal Head Shield (メタルヘッドシールド Metaru Heddo Shīrudo) - the head's top armor. It is made of Cold Metallium (コールドメタリウム Kōrudo Metariumu) that serves as the in-built protection to the user's head.
    • Caution Camera (コーションカメラ Kōshon Kamera) - Kikai's visor. Using a heavy toughness lens that is resistant to shock and dirt, it is possible to secure visibility under harsh environments. It also has a caution flash and a built-in siren, and has a role to emit a warning to surroundings with sound and light.
    • Crusher Port (クラッシャーポート Kurasshā Pōto) - The mouthplate that serves as Kikai's filling port. Supplies lubricants and supplies it to each part of the machine.
    • Spanney Horn (スパニーホーン Supanī Hōn) - The cross spanner-like faceplate that serves as Kikai's communication device. It enables communication with all kinds of equipment including artificial satellite. It is made with the highly durable Cold Metal Tool Steel (コールドメタル工具鋼 Kōrudo Metarukōgu-kō) that make up Kikai's armor and weapons.
    • EMG Crash Bolt (EMGクラッシュボルト EMG Kurasshu Boruto) - The two 'bolts' at the bottom the Spanney Horns. They are emergency stopping devices. If Kamen Rider Kikai's equipment becomes unstable for some reason, it has the role of physically stopping the equipment.
  • Metal Shield Jacket (メタルシールドジャケット Metaru Shīrudo Jaketto) - The chest armor. A built-in master cylinder for pumping energy into the fuselage distributes the energy to the fuselage in accordance with the control program. Moreover, it is easily maintainable thanks to a virtual console for external input and the numerous Guide Paint (ガイドペイント Gaido Peinto) markings, allowing one person to fix about 87% of damage and malfunction.
  • Metal Shield Shoulder (メタルシールドショルダー Metaru Shīrudo Shorudā) - the shoulders. It follows the motion of the crane arm and has the role of following the fragile part of the movable part. It is a remodeled type of shoulder guard for the Humanoise, exterior panels are replaced with armor plates made of Cold Metallium and attached to the truss frame. This resulted in a structure similar to those found in space armors.
  • Inner Crane Arm (インナークレーンアーム In'nā Kurēn Āmu) - The upper arms. It is derived from the power assist unit for Humanoises. The arm is strengthened with 6 energy pressure type cylinders, and demonstrates the power to lift a maximum of 360 tons.
  • Power Arm Winder (パワーアームワインダー Pawā Āmuw Windā) - The forearm armor. It strongly supports the Ripper Gloves by delicately manipulating ten super steel wires with a built-in winch mechanism. It is a retrofitted Humanoise forearm of the winch option, exterior panels are replaced with armor plates made of "Cold Metallium" and attached to the truss frame.
  • Ripper Glove (パワーアームワインダー Pawā Āmu Windā) - The hands. The grip force of the Humanoise is increased 18 times by interlocking with the Power Arm Winder. The tip is coated with a super steel metal coating, and can crush rocks and concrete lumps by thrusting. Control over the Ripper Glove is very precise, allowing Kikai to do delicate tasks such as grabbing raw eggs or playing a guitar without fear of breakage.
  • KK Madproof (KKマッドプルーフ KK Maddo Purūfu) - The bodysuit. It is made of a special protective sheet. It blocks dust and wind from entering and affecting any internal machinery, thereby keeping the condition of the machines intact. It has an antifouling finish.
  • Inner Lift Leg (インナーリフトレッグ In'nā Rifuto Reggu) - The legs. It is diverted from the leg power assist unit for Humanoises, and strengthens thigh with ten energy pressure type cylinders. This mechanism can also be used as a damper utilizing pressure, absorbing the impact of landing such as jumping. Also, an energy condenser is built in the shin, and by rapidly charging the energy, it is possible to dramatically increase the destructive power of the kick.
  • Knee Jacky (ニージャッキ Nī Jakki) - The knee joints. It is derived from a power assist unit for joint part for the Humanoise. It incorporates an energy pressure type torque converter and demonstrates a maximum torque of 242 kgf/m (kilogram force per minute), resulting in knees that can rotate at high speed.
  • High Compression Muscle (ハイコンプレッションマッスル Hai Konpuresshon Massuru) - The leg and shin armors. It uses divergent special armor from the Humanoise army. Thanks to the inbuilt Muscle Pipeline (マッスルパイプライン Massuru Paipurain), leg power such as striking power and agility is greatly enhanced.
  • Heavy Run Marauder (ヘビーランマローダー Hebī Ran Marōdā) - The feet. It is a reinforced type of the hoisting device for the Humanoise and has a mechanism that uses the explosive power of the built - in ultra - small engine to splash the body with reaction force. Because it is raising the explosive power to the limit as a battle purpose, it exchanges the exterior to what is made of Cold Metallium.

By touching the Destructo Reactor grips of the Kikai Driver, Kamen Rider Kikai can initiate one of three attacks:

  • Kikai Will Destroy (キカイデハカイダー Kikai de Hakai dā) - Kikai generates electrified ice energy from his belt and channels it through his right foot as he executes a spin kick.
  • Ultimetal Finish (アルティメタルフィニッシュ Arutimetaru Finisshu) - Kikai channels his electrified ice energy through his right arm and executes a punch powerful enough to destroy the object.
  • Fullmetal The End (フルメタル・ジ・エンド Furumetaru Ji Endo) - Kikai generates a large amount of electrified ice energy throughout his upper body and jumps high, and the energy transfers to his right foot and solidifies into a large icicle that penetrates the target.

AppearancesZi-O Episodes 22-24



  • Satellite - A satellite which absorbs sunlight and transforms into a solar-based laser beam that recharges Rento.

Behind the Scenes


Rento Makina is portrayed by actor Jingi Irie (入江 甚儀 Irie Jingi), who best known for his roles as Kikaider (REBOOT) and Zamigo DelmaIcon-crosswiki in Kaitou Sentai Lupinranger VS Keisatsu Sentai PatrangerIcon-crosswiki.


Rento Makina's last name is a pun on the word "machina" (マキナ Makina).


  • Rento/Kikai pays homage to Kikaider, a hero who also created by Shotaro Ishinomori.
    • Rento's actor, Jingi Irie, played the rebooted Kikaider back in 2013.
    • "Kikai" means "machine" in Japanese, which alludes to the fact that Rento isn't 100% human. This is similar to Irie's previous role as Kikaider due to the fact that Kikaider isn't human at all.
    • His style of clothing is very similar to JiroIcon-crosswiki's 1970s television show incarnation, having a yellow shirt, black leather gloves, with a denim jacket and blue jeans.
    • One of the words the Kikai Driver cries out during transformation is "Hakai!", which alludes to Kikaider's arch enemy Hakaider. This lore is also represented in his finishing move, Kikai Will Destroy (キカイデハカイダー Kikai de Hakai dā),  a pun on both Kikaider and Hakaider.
    • The title of the first episode in which Rento appears in is a pun that spells out Kikaider ("It's Kikai/ Kikai Da!").
  • Kikai is the first future Kamen Rider in Kamen Rider Zi-O whose suit isn't retooled from any previous Kamen Rider. Instead, he is retooled from the Guardians.
    • Kikai's helmet with the crossed wrenches (spanners) somewhat resembles Kamen Rider Kaixa's helmet.
  • Overall, Kikai is the most distant future Rider in the entire Kamen Rider series.
    • His active year, 2121, is 150 years after the very first Kamen Rider debuted.
    • It is also interesting to note that the year Kikai comes from is set after the time period where Geiz, Tsukuyomi, and Black Woz hail from: 2068. In an ironic twist, both of their timelines are dystopian futures - 2068 is where Oma Zi-O rules the world with an iron fist, while 2121 is where humanity is enslaved by mechanical beings.
  • Unlike the previous two Future Riders who were portrayed by former Sentai Rangers actors, Jingi portrayed a Sentai villainIcon-crosswiki as well as the rebooted Kikaider, as previously mentioned.
    • An obvious reference is also represented in his cryokinesis attack, while Zamigo is also able to manipulate ice.
  • Kikai's story, involving a dark future where the last of humanity is being attacked by machines, is very similar to both the Terminator franchise and Power Rangers RPMIcon-crosswiki.
  • Kikai's design is extremely similar to Grease's.
    • Both share the robot and machine motifs.
    • Both had the same body and eye coloration with Gold Drive.
    • Both have the ice/snow manipulation ability.
  • Kikai is the only future Rider in Zi-O to have these different traits among the other future Riders:
    • Kikai is the only non-human Rider in the future.
    • Kikai was encountered for more than once in Sougo's dream, as each of them is connected instead of just a one-off scene.
    • Kikai was subjected to the Cross of Fire rule, wherein a Rider is known for the association with their respective adversary. In Kikai's case, he is, in fact, a Humanoise who defected from his kind to defend the remaining humans, mirroring the case of Takumi Inui, the Taros and Wataru Kurenai to name a few.
    • Kikai is not a true "future" Rider in a sense that due to Sougo's powers, Kikai exists in an imaginary future that turned into a reality.
  • Despite being the nominated rider to have his power taken for Miridewatch, White Woz doesn't know the existence of Kikai, despite he had already mentioned that Geiz will need three supposedly Miridewatch.


Sougo Tokiwa (future, Mirror World) - Geiz Myokoin - Woz (black, white)
Future Kamen Riders
2022: Rentaro Kagura - Isamichi Konjo
2040: Mondo Douan
2121: Rento Makina
Rider Time Ryuki Riders
Ishihashi - Tozuka - Kimura - Ishida - Abyss - Odin
Other Riders
G3 Team
Movie-exclusive Riders
Barx - Zonjis - Zamonas
Ziku-Driver - Ridewatches - BeyonDriver - Mirai Driver (Shinobi, Hattari, Quiz, Kikai, Ginga) - Zikan Girade - Zikan Zax - Ride HeiSaber - Zikan Despear - Saikyo Girade - Zikan Jaclaw - Faizphone X - Taka Watchroid - Kodama Suika Arms - Ride Striker - Time Mazine - Kurogane Oogama - Unnamed Giant Wasp Mecha
Rider Armors - Ridewatch Holder - Oma Advent Calendar - Future Note - Time Break/Burst
9 5 DO: Geiz Myoukouin - Tsukuyomi - Junichiro Tokiwa
Futaros - Iroha Kagura - Master Gamano - Sara - Ms. Sailor
Resistance: Resistance Captain
Agito: Shouichi Tsugami - Takahiro Omuro
Ryuki: Shinji Kido - Dark Shinji - Ren Akiyama - Takeshi Asakura - Miyuki Tezuka - Jun Shibaura - Goro Yura - Kamen Rider Odin
555: Takumi Inui - Masato Kusaka
Blade: Kazuma Kenzaki - Hajime Aikawa
Hibiki: Tomizo Todayama - Kyosuke Kiriya
Kabuto: Arata Kagami - Sou Yaguruma - Shun Kageyama
Den-O: Ryotaro Nogami
Kiva: Jiro
Decade: Tsukasa Kadoya - Daiki Kaito
OOO: Eiji Hino
Fourze: Gentaro Kisaragi
Wizard: Haruto Soma - Kosuke Nitoh
Gaim: Kouta Kazuraba - Kaito Kumon
Ghost: Takeru Tenkuji - Makoto Fukami
Ex-Aid: Emu Hojo - Hiiro Kagami - Kuroto Dan
Build: Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro
Chuta Ohsugi - Daita Kondou - Chikao Nezu - Hina Izumi - Shibuya Hachioji - Narita Kisarazu - Misora Isurugi - Owner - Momotaros - Urataros - Kintaros - Ryutaros - Daisuke Okubo - Amane Kurihara - Mana Kazaya
Swartz - Heure - Ora
Movie Exclusive
Another Build - Another Ex-Aid - Another Fourze - Another Faiz - Another Wizard - Another OOO - Another Gaim - Another Den-O - Another Double - Another Kuuga - Another Ghost - Another Shinobi - Another Quiz - Another Ryuga - Another Kikai - Another Zi-O - Another Ryuki - Another Blade - Another Agito - Another Hibiki - Another Kiva - Another Kabuto
Other Villains
Kasshin - Humanoise - Yaminin