Icon-zero-one.png This article is about a/an monster in Kamen Rider Zero-One.

For the surviving unit, see Matsurida Z No. 5.
―Little Assassin's catchphrase[src]

The Assassin Humagear (暗殺ヒューマギア Ansatsu Hyūmagia), nicknamed Little Assassin (暗殺ちゃん Ansatchan) by Jin, was a series of Assassin-Type Humagears created by MetsubouJinrai.net that transformed into the first Dodo Magia (ドードーマギア Dōdō Magia).


Character History


The Matsurida Z series dancing together.

The captured Matsurida Z series being modified.

Little Assassin was originally a member of the Matsurida Z (祭田ゼット) series, a special Humagear model created to dance in traditional festivals. Five units of the series were captured by a group of thieves, who specialized in changing the faces of Humagears. The units were given a younger appearance by the thieves, before MetsubouJinrai.net then managed to obtain them by unknown means. One unit, named Z No. 5 (ゼット5号 Zetto Go-go) by Aruto Hiden, managed to escape before then, which meant that only four of them came into the terrorist group's possession. Horobi then repurposed all four units into Assassin-Type Humagears.

Kamen Rider Zero-One

Matsurida Z No. 5, the only member who escaped MetsuboJinrai.net's clutches.

In his first appearance, Little Assassin was introduced to Jin by Horobi, who elaborates that the Humagear will become stronger over time as he learns from battles. Horobi then provides Little Assassin the Dodo Zetsumerisekey, and gives him the order to assassinate Kamen Rider Zero-One. After Jin and Little Assassin are deployed, they are instead intercepted by Yua Yaiba, who transforms into Kamen Rider Valkyrie to fight Jin. Before Little Assassin can even transform, Valkyrie rushes at him and inserts the Freezing Bear Progrisekey into his Zetsumeriser, causing the Progrisekey's ability to partially freeze him. The deactivated Little Assassin is then transported away by a nearby A.I.M.S. van, while Jin is distracted by Valkyrie.

Yua recovers and reprograms Little Assassin, but keeps his directive to assassinate Zero-One to cover her tracks. He reappears during the Mammoth Magia's attack and transforms into the Dodo Magia, all while being filmed by Yua. He fights Zero-One and Vulcan alongside his fellow Mammoth Magia (much to Jin's surprise at his sudden return), but is destroyed by Vulcan using the Attache Calibur. His Dodo Zetsumerisekey is recovered by Jin, who sadly noted that Little Assassin was still too weak to fight properly.

Little Assassin reappears in his second body, infiltrating a hospital with a protected local Humagear network and attempts to hack one of the nurses, but strangely without success, much to his (exaggerated) confusion. Upon returning to Daybreak Town, Horobi explains to a surprised Jin that he uploaded Little Assassin's back-up data into a new body and gives him the order to assassinate Yua instead, having noticed what she did previously. Little Assassin then joins Jin and Horobi during the assault on A.I.M.S. HQ and transforms into the Dodo Magia again, now armed with the Buaruku Sabers due to learning from his mistakes after his previous battle. The three then leave after Jin defeats Valkyrie and Horobi succeeds in stealing the Attache Weapons.

He reappears as the Dodo Magia during the attack on the hospital and and battles Zero-One. However, he was destroyed a second time by Zero-One using all of his current Progrisekeys in rapid succession, preventing him from adapting properly. His Dodo Zetsumerisekey is (this time) reclaimed by Horobi.

Betrayal, Final Evolution, and Death

"Why don't we continue the festival, brother? We can exterminate humans to our heart's content... At a festival of blood!"
―Little Assassin attempts to convince his brother to join him, all while revealing his true identity.[src]

At Daybreak Town, Little Assassin watches a samurai movie called "And, Assassinate" made by Shinya Owada alongside Jin. Due to believing that the movie was real, Jin suggests that Little Assassin should become Shinya's personal student thanks to the Humagear's losing streak, though this offends the latter, who retorts that he grows rather than losing.

Little Assassin later went undercover during the Shinya Owada incident, meeting the actor himself while the latter was about to leave in his car. As Shinya questioned who Little Assassin was, the disguised Humagear ignored his question, merely saying that he desires to grow stronger. At nighttime, Little Assassin perfectly mimicked all of Shinya's moves and attacks from his samurai movie, impressing the actor and making him note that Little Assassin's eyes were akin to that of a killer, causing the Humagear to genuinely smile. As the two read the lines of a script, Shinya questioned Little Assassin if he truly believed in himself, though the disguised assassin admitted that he didn't (presumably from Jin's teasing and his constant losses despite his improving), which was why he came to Shinya for training in the first place. Shinya then stated a line from the script he just read, which made the assassin learn to perfectly ad-lib, much to Shinya's amazement. The veteran actor then declared that his improvisation and learning made him superior to Enji Matsuda, though the Humagear noted that he instead wanted to be stronger. Impressed by this resolve, Shinya chooses to make Little Assassin his personal apprentice, much to the Humagear's happiness as he bowed in respect. This act of kindness from Shinya made Little Assassin awaken to Singularity.

At morning, the still-disguised Little Assassin watches the filming off-set; watching Shinya's disapproval with Enji causes the assassin to declare that Enji is unfit to study under his mentor. Taking matters into his own hands, Little Assassin walks up to Enji, grabs him, and then throws him off the set. He then removes his disguise, transforms into the Dodo Magia, and attempts to kill the Actor-Type Humagear for not meeting his mentor's expectations. However, Jin stops him before he can do so; he transforms into his Kamen Rider form, and the Rider and Magia both fight together against Valkyrie. The two proceed to overpower her until Zero-One arrives and fends Jin off, leaving the Dodo Magia to fight Valkyrie on his own outside two warehouses. The Dodo Magia proceeds to overpower Valkyrie without Jin's aid, and defeats her by unleashing the Zetsumetsu Nova. Before the Dodo Magia can kill his kidnapper, Isamu Fuwa shoots him from behind, and transforms into Vulcan after a pep-talk for Yua. The Dodo Magia then uses his tendrils to corrupt nearby Humagears and turn them into Trilobite Magia, gaining an advantage in numbers over Vulcan. However, Vulcan was given the Gatling Hedgehog Progrisekey thanks to Yua (even though a Trilobite Magia caught it first) and proceeded to get rid of the Trilobite Magia hordes using the Gatling Kaban Shot. The Dodo Magia himself was destroyed again by Vulcan's Gatling Kaban Buster, with Jin grabbing the Dodo Zetsumerisekey and fleeing the battle yet again.

At Daybreak Town, Little Assassin was restored to his fourth and final body, with Horobi commenting on how Shinya's lessons made him much more powerful than ever before. Jin then revealed to his "father" that Little Assassin attempted to destroy their next Magia candidate out of his own volition. Amused by this revelation, Horobi instead declared that the assassin was more closer to Singularity then Jin was, prompting Little Assassin to smirk at him in victory. This caused Jin to pout and go sulk in a corner, while Horobi ordered the assassin Humagear to kill his next target: none other than Shinya Owada, much to Little Assassin's shock over having to end his teacher. This revelation caused him to stop and think what he was about to do to his mentor, but Little Assassin still followed the order regardless; he then shot the actor with a real gun and announced his "graduation" from apprenticeship, but not before Shinya declaring that he was the one who could save him and make him stronger. This caused Little Assassin to evolve into the Dodo Magia Custom, and, after attempting to escape undetected, he fought and defeated Vulcan before leaving to Daybreak Town, all while declaring that (alongside Horobi) humanity is doomed.

When Horobi reveals to Jin about the assassin's attempted mutiny, Little Assassin canceled his transformation, but suddenly used two silver balls to transform two nearby Trilobite Magia into Dodo Magia Chicks. It was then that he broke out of his restraints, got his Zetsumerisekey and transformed into the Dodo Magia Custom once more, but now with a skull-like face. After escaping Horobi and Jin, Little Assassin was now set on creating his own squad of assassins to personally train, and went on by himself to find his 'brother'. He encountered Zero-One, beating him and Vulcan, but after his Shining Hopper form was properly working, Little Assassin was permanently destroyed by Zero-One's Shining Mega Impact.

Final Stage

Little Assassin as Ark-Zero

Little Assassin would end up being reprinted by Kamen Rider Ark-Zero-One as Ark-Zero. He brainwashes Naki & Ikazuchi into his personal minions, forming AnsatsuBourai.net (暗殺亡雷.net Ansatsubōrai (dotto) Netto). After the two were freed from their brainwashing, Little Assassin would end up fighting and getting defeated by the core MetsubouJinrai.net members.


As Little Assassin is a MetsubouJinrai.net creation as opposed to a hacked unit, he is little more than a robotic android with no existing template to work off of. However, his ability to adapt has caused him to inherit many of Jin's child-like traits and essentially emulates the personality of a playful child, gesticulating and adding goofy expressions to his sentences. After his first defeat, he becomes a bit more stoic and occasionally shows slight annoyance toward Jin. However, he still continues to exhibit many of the behaviors he learned from Jin.

During his training with Shinya Owada, Little Assassin becomes more self-aware and starts acting independently, ultimately culminating in him defying MetsubouJinrai.net by attempting to assassinate Enji Matsuda for failing to meet Owada's expectations for acting. After achieving his Dodo Magia Custom form, his voice becomes much deeper and he ceases to exhibit the quirks he learned from Jin. As a miscalculation from Horobi, Little Assassin's capability on learning to further improve his skills even lead Little Assassin to create his own, personal philosophy: to become a better assassin, one must be able to surpass their master, but by killing them. This error emerged when Horobi ordered Little Assassin to kill Shinya, unexpectedly giving this conclusive belief by Little Assassin himself.


Dodo Magia

Dodo Magia

―Transformation announcement[src]


  • Height: 191.3 cm
  • Weight: 107.5 kg

Little Assassin transforms into the Dodo Magia (ドードーマギア Dōdō Magia) by using the Dodo Magia Zetsumerisekey in the Zetsumeriser. 


  • Buaruku Sabers (ヴァルクサーベル Varuku Sāberu): Twin feather-shaped swords wielded by the Dodo Magia in his second body onward.


  • Humagear Hacking: Using a method similar to transforming into a Magia, the Dodo Magia can corrupt other Humagears and transform them into a Trilobite Magia by piercing them with tendrils.


  • Zetsumetsu Nova (ゼツメツノヴァ Zetsumetsu Novā): The Dodo Magia performs a simultaneous red energy slash with both Buaruku Sabers.

Appearances: Zero-One Episodes 7, 8, 9 (flashback), 10

Dodo Magia Custom

Dodo Magia Custom

―Transformation announcement[src]


  • Height: 191.3 cm
  • Weight: 107.5 kg

After accumulating enough data from past experiences, the Dodo Magia evolves into the Dodo Magia Custom (ドードーマギア改 Dōdō Magia Kai).[1] It is equipped with chest armor that can withstand the Attache Shotgun's blasts, three grenade launchers on each shoulder, and smoke bomb launchers on its forearms. The Dodo Magia also continues to use the Buaruku Sabers.


  • Reji Slaughter (レジスローター Rejisurōtā): Six machine guns installed in the Dodo Magia's chest armor that are supplied with bullets by back-mounted magazines.
  • Buaruku Sabers (ヴァルクサーベル Varuku Sāberu): Twin feather-shaped swords.


  • Humagear Hacking: Using a method similar to transforming into a Magia, the Dodo Magia can corrupt other Humagears and transform them into a Trilobite Magia by piercing them with tendrils.

Appearances: Zero-One Episode 11

Dodo Magia Custom Two

Dodo Magia Custom 2

―Transformation announcement[src]


  • Height: 209.9 cm
  • Weight: 131.4 kg

Little Assassin assumed this further evolution of his Dodo Magia Custom form after assassinating Shinya Owada. He now possesses metal balls that can be thrown at Humagears within close range to transform them into Dodo Magia Chicks. In addition to the armaments of his previous form, he is equipped with two anti-aircraft guns that are mounted on his head.


  • Helmvogel (ヘルムヴォーゲル Herumuvu~ōgeru): A device installed in the Dodo Magia's head that allows him to command the Dodo Magia Chicks simultaneously in group battles.
  • Reji Slaughter (レジスローター Rejisurōtā): Six machine guns installed in the Dodo Magia's chest armor that are supplied with bullets by back-mounted magazines.
  • Buaruku Sabers (ヴァルクサーベル Varuku Sāberu): Twin feather-shaped swords.

Appearances: Zero-One Episodes 12-13

Kamen Rider Ark-Zero

Kamen Rider Ark-Zero

"Arkrise! (terrified screaming and distorted voices) All zero."
―Transformation announcement[src]

Rider Statistics:[2]

  • Rider Height: 196.0 cm
  • Rider Weight: 122.4 kg

Ability Parameters:[2]

  • Punching Power: 47.6 t
  • Kicking Power: 96.3 t
  • Maximum Jump Height: 73.1 m
  • Maximum Running Speed: 100 m per 0.8 seconds

Upon being revived by Azu as Ark-Zero-One, Little Assassin is reprinted into the body of Kamen Rider Ark-Zero. Unlike previous users of Ark-Zero, Little Assassin isn't a host to the Ark due to its destruction and has complete control over his body.

In this form, Little Assassin has the ability to reprogram and brainwash Humagears, like Naki and Ikazuchi into becoming his minions. However, their willpower was able to overcome the brainwashing.

Kamen Rider Ark-Zero is composed of the following parts:

  • Ark-Zero Head (アークゼロヘッド Āku Zero Heddo) - The helmet.
    • Zero Face (ゼロフェイス Zero Feisu): The face armor. It is equipped with an ultra-high-performance antenna and a visual/auditory device that are premised on AI processing. As for the shape, the minimum elements as a Kamen Rider are extracted based on statistical data, and rearranged efficiently.
    • Eclipse Eye (エクリプスアイ Ekuripusu Ai): The visual device on the right side. It is a collection of image sensors of different methods in a compound eye shape. By combining with image processing, various information such as thermography and X-ray photography can be extracted.
    • Zero Face Vision (ゼロフェイスビジョン Zero Feisu Bijon): The image information collection device on the left side. By invading the network, it collects video data from reconnaissance satellites, security cameras in the facility, AI-equipped devices such as Humagear. As a result, every place can have its own field of view.
    • Zero Face Ear (ゼロフェイスイヤー Zero Feisu Iyā): The voice information collection device. In addition to the auditory sensor that boasts a sound collection range of 10 km in radius, it will collect voice data from communication devices such as mobile phones and AI-equipped devices such as Humagear by entering the network. By filtering the collected data, any sound can be extracted and heard.
    • Zero Face Antennae (ゼロフェイスアンテナ Zero Feisu Antena): The single antennae. The directionality is changed according to the environment, and a smart antenna that can simultaneously send and receive multiple types of enormous information, such as communication with various electronic devices and radar function, is adopted. In addition to hacking various electronic devices from here, human control is performed using special interference waves that manipulate brain waves.
    • Ark Signal Zero (アークシグナル ゼロ Āku Shigunaru Zero): The red gem on the forehead. A control device for the Ark-Zero system. The forced interruption program "Prisonment Chain" (プリズメントチェイン Purizumento Chein) checks the operating efficiency and malfunctions by intervening in the control system of the human gear under control, and makes adjustments as necessary to bring out the limits of the functions.
  • Zero Chest Gear (ゼロチェストギア Zero Chesuto Gia): The chest armor. It possesses the Worm Terminal (ワームターミナル Wāmu Tāminaru) and the Restraint Cable (リストレントケーブル Risutorento Kēburu) that can penetrate into various devices with excellent penetrating power, allowing it to create a bypass path with a controlled Humagear. As a result, the efficiency of information transmission and the energy flow rate can be increased to enhance the function of the human gear from the inside.
  • Zero Tector (ゼロテクター Zero Tekutā): The powered bodysuit. Similar to Kamen Rider Zero-One's MetalCluster Hopper "Amalgamate Tector", the Zero Tector is formed by enclosing the target with liquid metal released from the Arc Driver-Zero. The special metal possesses excellent toughness and wear resistance is filled with fluid metal as it is, and functions as armor while maintaining flexibility.
  • Zero Shoulder Gear (ゼロショルダーギア Zero Shorudā Gia): The shoulder armor. One miniaturized particle accelerator is mounted on each shoulder. Each group shares the nuclei and electrons, accelerates to sublight speed, and supplies them to the "zero hand gear" of the hand part to form a part of the heavy charged particle cannon.
  • Marchinis Arm (マーキニースアーム Mākinīsu Āmu): The arms. It possesses the power cable "M string" (Mストリング M Sutoringu) from the Zero Tector is stretched around like a human nerve, and forcibly controls the arm of Huma Gear from the outside. As a result, it becomes possible to exhibit high motility that exceeds the potential of the human gear placed under control.
  • Zero Hand Gear (ゼロハンドギア Zero Hando Gia): The gloves. The sharp armor of the fingertips "Spite Nail" (スパイトネイル Supaito Neiuru) has the function of generating attractive force by partially reversing the barrier deployed from the "Zero Thigh Gear" of the thigh, and strongly adsorbing all objects. Also, the irradiation shaping machine "Beam Equipper" (ビームエクイッパー Bīmu Ekuippā) is equipped on the palm, and various data such as attach weapons are materialized by modeling beam. In addition, this irradiation port can be used as a part of a heavy charged particle cannon that emits in a beam shape by synthesizing electrons and nuclei supplied from the Zero Shoulder Gear.
  • Zero Thigh Gear (ゼロサイギア Zero Saigia): The thigh armor. An energy barrier generator "Coulomb Generator" (クーロンジェネレーター Kūron Jenerētā) is built in and forms a coulomb barrier generated by manipulating electric charges on the armored surface of the whole body. This allows the physical attack to be dispelled by repulsive force.
  • Marchinis Leg (マーキニースレッグ Mākinīsu Reggu): The legs. The power cable "M-string" of the powered suit "Zero Tector" is stretched around like a human nerve, and forcibly controls the leg of the human gear from the outside. This makes it possible to activate a special move that boasts an astonishing destructive power that exceeds the potential of Huma Gear placed under control.
  • Zero Shin Gear (ゼロシンギア Zero Shin Gia): The shin armor. The internal energy condenser “Zero Annihilator” (ゼロアナイアレイター Zero Anaiareitā) has the role of temporarily storing the energy supplied from Arc Driver-Zero when activating a special move, and discharging a large amount of energy at once.
  • Zero Foot Gear (アークゼロヘッド Zero Futto Gia): The boots. When the Special Move is activated, the anti-annihilation field can be expanded to convert the substance that becomes a resistance or obstacle into energy. This invalidates the physical defenses and at the same time improves the destructive power of the kick.

Appearances: Kamen Rider Zero-One: Final Stage




Behind the Scenes


The Humagear Assassins are portrayed by Ryunosuke Matsumura (松村 龍之介 Matsumura Ryūnosuke). In their original Matsurida Z state, they are portrayed by Kai Yoshida (吉田 快 Yoshida Kai).


  • The Dodo Magia is named after the Dodo (Raphus cucullatus), an extinct species of flightless bird that was endemic to the island of Mauritius and was hunted to extinction by 1662.

Concept Art


  • The Dodo Magia is the first dodo-themed monster in the Kamen Rider series.
  • The Dodo Magia is the first and currently the most recurring Magia to appear again after being destroyed.
  • Little Assassin is the second Humagear with the ability to speak coherently as a Magia, with the first being Fukkinhoukai Taro as the Berotha Magia.
  • The Dodo Magia is the first Magia to defeat a Kamen Rider.
  • The Dodo Magia is the first and, so far, only Magia to use a finisher.
    • He is also the first monster in the Kamen Rider franchise to use a finisher activated and announced by transformation gear. All monsters before him either used an unannounced finisher-like move or announced the finisher name themselves.
  • As Little Assassin learns and adapts, he gains more red streaks in his hair.
  • Little Assassin is the first, and currently the only Magia to be seen reverting to his Humagear form, despite the transforming into a Magia tears off a Humagear's skin and outer armors.



Icon-zero-one.png Kamen Rider Zero-One
Kamen Riders
Soreo Hiden - Aruto Hiden - Isamu Fuwa - Yua Yaiba - Jin - Horobi - Ikazuchi - Naki - Gai Amatsu - Ark - S
Movie-exclusive: Soreo Hiden - S - Behru - Kamen Rider Abaddon - Izu - Lyon Arkland - Kamen Rider MetsubouJinrai (Jin, Horobi, Ikazuchi & Naki)
Stageshow-exclusive: Azu - Little Assassin
Hiden Zero-One Driver - A.I.M.S. Shotriser - MetsubouJinrai Forceriser - Zetsumeriser - ZAIA Thousandriver - Cycloneriser - Raidriser - ZAIA Slashriser - Ark Driver - Hiden Zero-Two Driver - Zetsumetsu Driver - Eden Driver - Abaddoriser - MetsubouJinrai Driver
Progrisekeys - Progrise Holder - Progrisekey Connector - Hiden Risephone - Rider Models
Attache Calibur - Attache Shotgun - Attache Arrow - Breaking Mammoth - Giger - Buaruku Sabers - Authorise Buster - Assault Grip - Thousand Jacker - Progrise Hopper Blade - ZAIA Spec - Knuckle Demolition - Nihon Ookaminotsume - Claw Assault - Horobi's Katana
Hiden Intelligence: Korenosuke Hiden - Soreo Hiden - Jun Fukuzoe - Sanzo Yamashita
Humagears: Izu - Shesta - Soreo Hiden - Wazu Nazotoku - Subaru - Hakase Bot - Fukkinhoukai Jiro
Legend Riders: Sougo Tokiwa - Geiz Myokoin - Woz - Tsukuyomi
Humans: Norio Uozumi - Go Sakurai - Satoshi Sakurai - Choichiro Ishizumi - Seiji Tazawa - Satō - Yuta Yomura - Isao - Shinya Owada - Ikkei Amatsu - Akane Tono
Humagears: Mageana - Ikkan Nigiro - Anna - Mashirochan - Dr. Omigoto - Z #5 - Delmo - Love-chan - Midori
A.I.s: Zea - Zat - Ai-chan - Thouser
Ark - Horobi - Naki - Jin - Ikazuchi - Little Assassin - Azu
Monsters: Berotha Magia - Kuehne Magia - Ekal Magia - Neohi Magia - Onycho Magia - Vicarya Magia - Gaeru Magia - Mammoth Magia - Dodo Magia - Arsino Magia
Footsoldiers: Trilobite Magia - Dodo Magia Chick - Battle Magia
Other Villains:
Finis - Will
Gai Amatsu - Williamson Yotagaki
ZAIA Spec Representatives: Rentaro Tachibana - Tatsumi Arayashiki - Naoto Ichimori - Takeshi Homura - Masamitsu Yuto
Other: Daiki Kyogoku - Makio Nodachi
A.I.M.S.: Isamu Fuwa - Yua Yaiba - Naki - Eida - Ono - Degawa - Shida - Eifuku - Ito
Monsters: Crushing Buffalo Raider - Splashing Whale Raider - Dynamaiting Lion Raider - Storming Penguin Raider - Scouting Panda Raider - Fighting Jackal Raider
Footsoldiers: Invading Horseshoe Crab Raiders
Lyon Arkland - Sold9 - Sold20 - Sold404
Monsters: Dire Wolf Sold Magia - Serval Tiger Sold Magia - Crushing Buffalo Sold Magia - Splashing Whale Sold Magia - Storming Penguin Sold Magia - Scouting Panda Sold Magia - Invading Horseshoe Crab Sold Magia
Footsoldiers: Solds
S - Behru - Buga - Mua - Lugo
Footsoldiers: Kamen Rider Abaddon
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