Icon-oo.pngThis article is about a/an Ranger in GoGo Sentai Boukenger.

"The Fast Adventurer! Bouken Black!"
―Bouken Black's roll call[src]

Masumi Inou (伊能 真墨 Inō Masumi) is the Fast Adventurer Bouken Black (迅き冒険者ボウケンブラック Hayaki Bōkensha Bōken Burakku) of the Boukengers.

Masumi is 21 years old at the beginning of Boukenger.[1]



On the reverse side of society, he adopted the title of a "treasure hunter" from his techniques of searching ruins and excavation, but he's not as good as Satoru Akashi. When he was younger, Yaiba of Darkness murdered his excavation group, and Masumi has been in a pursuit of revenge ever since.

In Task 1, after taking the Heart of Gordom, he briefly returns his Accellular to Satoru, who in turn threatened him to drop him into red-hot magma for it if he did not accept it again.

He is a rookie member of the Boukenger team along with Natsuki Mamiya, whom he first met when she was trapped under a heavy rock that left her with amnesia. He acts as a brotherly figure towards her, but soon becomes visibly jealous when he notices that Natsuki is becoming more attached to Satoru and Souta Mogami. Masumi has a thing against being referred to by color, preferring to be called by name instead. He has admitted his affection towards Natsuki. Masumi appears to have a disliking towards peas, as he was seen removing them whenever he eats fried rice.

Eventually, after Masumi's battle with Yaiba, he learns to trust Satoru, since Satoru had believed in him from the start. Even though Souta used to consider him to be a thief, Masumi sometimes calls him an "ex-spy." He refers to Sakura Nishihori as "Sakura-neesan" (sister) and seems to admire her, yet he also fears her. Masumi is hot-tempered and tends to act irrationally, but he will never give up and will never run away from a fight.

In Task 33 he is kidnapped by the Jaryuu Tribe and the Questers to obtain information about Natsuki, revealing to him that she is actually a Lemurian. Feeling responsible for all that happened following this revelation and what happened to Natsuki, Masumi went to her rescue only to see Natsuki with the Questers and disappear. After finally breaking into the Jaryuu's base, in a desperate attempt to get Natsuki out of her trance, Masumi embraces her and yells at her to remember who she really was, a Boukenger, and succeeded in recovering Natsuki and foiling the Negative's plans.

As of Task 46, due to doubts about himself and fears of what he could do to his comrades, Masumi abandoned the team, leaving only his SGS Jacket and Accellular. He returns to the team in Task 48, realizing that Masumi's treasure was being a Boukenger. During that time, he wields the Dual Crusher numerous times with Souta, Natsuki, Sakura, and Eiji Takaoka untransformed and without the Accel Tector.

In Task 49 after the final battle between Arch Priest Gajah, Masumi becomes the new Chief of the Boukengers after Satoru retired his Bouken Red commission to explore space for Precious.

Gekiranger vs. Boukenger

To be added Tvicon.png TV STORY-Juken Sentai Gekiranger vs. Boukenger

Super Sentai Versus Series Theater

Agri as Masumi.

Masumi's appearances in the "Versus Series", Boukenger vs. Super Sentai and Gekiranger vs. Boukenger, are featured in the Super Sentai Versus Series Theater, hosted by the heroes of Tensou Sentai Goseiger. Agri (Gosei Black) also dresses as Masumi in the Boukenger cosplay.


Legend War

A few years later, Masumi fought alongside not only his own team, but every single Sentai ranger in existence, against the Empire of Zangyack when it attacked the Earth in the Great Legend War. After fighting against hundreds of Gormin and their Zgormin commanders. AkaRenger noticed the fleet moving towards them, he gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada. Tvicon.png TV STORY-Ep. 1: The Space Pirates Appear Tvicon.png TV STORY-Gokaiger Goseiger Super Sentai 199 Hero Great Battle

Farewell Space Pirates

After the Zangyack Empire was defeated by the Gokaigers, Marvelous returned the Ranger Keys to their original owners, which is safely assumed that Masumi and his teammates have their powers again. Tvicon.png TV STORY-Final Ep.: Farewell Space Pirates


Bouken Black in Akibaranger Season Two.

Bouken Black appears as part of the five-man Boukenger team alongside the other two Inordinate Sentai, Dekaranger and Jetman, in Season Two's alternate take on the events of the first season. The three official Sentai come to aid the Akibarangers in the final battle with the Stema Otsu Corporation. Tvicon.png TV STORY-Ep. 1: Delusional War

Six official Sentai.

The Boukengers, with Bouken Silver this time, later appeared with the now five official Sentai, transforming into their Ludicrous Power which combined with the others to form the Ludicrous Cannon Bazooka, which the Akibarangers used to destroy Kameari Alpaca. Tvicon.png TV STORY-Ep. 10: Delusional Pillow Talk

Super Hero Taisen

The Boukengers, alongside the Abarangers, Hurricanegers, Magirangers, and Dekarangers, emerge through a dimensional wall.

Masumi, alongside his team (Bouken Silver and Zubaan were absent), among the majority of the Super Sentai heroes, was caught up in the "Super Hero Taisen" incident which eventually resulted in the Super Sentai teams and Kamen Riders joining forces to defeat both Dai-Zangyack and Dai-Shocker. During the final battle, he is seen with ShinkenRed fighting Sea Fist Demon Rageku.Tvicon.png TV STORY-Kamen Rider × Super Sentai: Super Hero Taisen

Super Hero Taisen Z

The Boukengers as seen in Super Hero Taisen Z.

The five-man Boukenger team was part of a force of Sentai and Rider reinforcements led by Akarenger and Kamen Rider #1Icon-crosswiki.png that came to assist the Sentai and Riders of recent years who were overwhelmed by the revived monster army of the Space Crime Syndicate MadouIcon-crosswiki.png. The combined forces of superheroes were able to turn the tide against the Madou army. They lined up and used their various finisher attacks to destroy the revived monsters.

After Demon King PsychoIcon-crosswiki.png was destroyed and the battle was finally over, the Boukengers appeared standing on a cliff with all the other heroes who appeared to help, to say goodbye to the heroes of recent years before taking their leave. Tvicon.png TV STORY-Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z

Zyuohger vs. Ninninger

The first 38 Sentai projected into Wild Tousai Shuriken King.

Bouken Black appeared with his team among the first 38 Super Sentai who collectively empowered Wild Tousai Shuriken King in its fight against the titanic Gillmarda, granting the Ninningers and Zyuohgers the power to perform the Zyuoh Ninnin Super Sentai Burst which destroyed Gillmarda with the combined power of all 40 Super Sentai. Tvicon.png TV STORY-Doubutsu Sentai Zyuohger vs. Ninninger: Message from the Future from Super Sentai

Super Sentai Strongest Battle

Masumi joined the Super Sentai Strongest Battle as a member of Cool Team. It’s unknown whether he participated in the competition, but his team was eliminated either after losing the first round against the Space Team or winning that and losing the second round against Land, Sea, Air Team.


Masumi fights first and asks questions later, unlike Souta. His rebellious nature and anti-hero persona tends to bring him some trouble. But his risky tactics make him a valuable asset to the team. As Yaiba had stated, he suppresses darkness in his heart and this darkness is freed at the conclusion of Task 45 when he holds the Precious known as the Three Headed Dragon of Darkness. He became infuriated when Nendo-gami mimicked his human form in Task 14; naturally, the fury did not die down until Nendo-gami was terminated.

Bouken Black

Bouken Black

Powers and Abilities


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  • Drift Crash: where he tosses his hammer like a boomerang; "Lightning Attack", where by spinning around his hammer in circles
  • Hammer Break: where he maximizes the power from the GoGo Formula's Parallel Engine and pulverizes the enemy
  • Hammer Dynamite: with the Accel Tector on, he uses the full power of the hammer on him


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Bouken Black with Accel Tector

Powers and Abilities


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Appearances: Boukenger Episode 16, 45, 46

Lucky Mode

Bouken Black donned "Lucky Mode" alongside the rest of the team in the The 30 Sentai Encyclopedia file of Task 46: The Awakened Darkness, in a parody of the Power-Up Henshin, calling back to the lucky outfit Akashi wore in Task 27: The Feng-Shui Trap.

Powers and Abilities


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Behind the Scenes


Masumi Inou is portrayed by Yasuka Saitoh (齋藤 ヤスカ Saitō Yasuka). As a child, he was portrayed by Shota Kato (加藤 将太 Katō Shōta). As Bouken Black, his suit actor was Yasuhiko Imai (今井 靖彦 Imai Yasuhiko).


  • In the Korean dub of Boukenger entitled Power Rangers Treasure Force]', which aired in South Korea, Masumi is renamed Ray.


  • "Inou" (伊能 Inō) is from the surname of Japanese surveyor and cartographer, Tadataka Inou (伊能 忠敬 Inō Tadataka). He is known as a person who exerted himself for creation the first perfect map of Japanese Islands by modern surveying techniques.
  • The second kanji of "Masumi," "sumi" ( sumi), means "black ink", which is used in calligraphy.

Ranger Key

The Bouken Black Ranger Key.

The Bouken Black Ranger Key (ボウケンブラックレンジャーキー Bōken Burakku Renjā Kī) is Masumi Inou's personal Ranger Key and what became of his powers after he along with the rest of the 34 Super Sentai sacrificed their powers to end the Great Legend War.

This key along with the majority of the Ranger Keys were collected by the Red Pirates and later used by the Gokaigers. The Bouken Black Ranger Key was mainly used by Don Dogoier (Gokai Green), who used it to fight as Bouken Black.

The Boukenger keys, along with all the Ranger Keys of the first 33 Super Sentai, were briefly taken by the Black Cross King and turned into Ranger puppets that were fought by the Gokaigers and the Goseigers. Splitting up, the puppet Bouken Black was defeated as part of a group of surviving Black and Green warrior keys by Gokai Green and Super Gosei Black. Tvicon.png TV STORY-Gokaiger Goseiger Super Sentai 199 Hero Great Battle

After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. Masumi received his key and became Bouken Black once more. Tvicon.png TV STORY-Final Ep.: Farewell Space Pirates



Super Sentai Battle: Dice-O

Bouken Black as depicted in Super Sentai Battle: Dice-O.

  • Profile
Masumi Inou/Bouken Black: to be added

Super Sentai Battle Base

Bouken Black is among the vast pantheon of Rangers which are available in the mobile game Super Sentai Battle Base, with his Accel Tector form being available as well.

Super Sentai Legend Wars

Bouken Black Card

Bouken Black appears with his team among all Sentai in the mobile game Super Sentai Legend Wars.

See Also

External links


Icon-oo.png GoGo Sentai Boukenger
Satoru Akashi - Masumi Inou - Souta Mogami - Natsuki Mamiya - Sakura Nishihori - Eiji Takaoka
Great Sword Man Zubaan
Accellular - GoGo Changer - Survi-Buster - Scope Shot - Bouken Bo - Radial Hammer - Blow Knuckle - Bucket Scoopers - Hydro Shooter - Sagasniper - Accel Tector - Dual Crusher
Mister Voice - Morio Makino - Kyoko - Shirou Masaki - Phantom Thief Selene - Ragi - Magi - Kei - Karato Takaoka - Yuji Toba - Akutagami - Kouichi Akashi - Professor Hanzou Igarashi - Kousuke Shimada - Taro - Miyu - Eve - Gekirangers - Gokaigers
30th logo.png
AkaRed - Nanami Nono - Asuka - Tekkan Aira - Tsubasa Ozu - Hikaru - Eiji Takaoka
Mecha and Robo
GoGo Dump - GoGo Formula - GoGo Gyro - GoGo Dozer - GoGo Marine - GoGo Drill - GoGo Shovel - GoGo Mixer - GoGo Crane - GoGo Jet - GoGo Fire - GoGo Aider - GoGo Police - GoGo Commander - GoGo Carrier - GoGo Fighter - GoGo Attacker - GoGo Roader
DaiBouken - DaiTanken - Super DaiBouken - Ultimate DaiBouken - SirenBuilder - DaiVoyager
Negative Syndicates
Gordom Civilization
Arch Priest Gajah - Karths - Giant God Gordom - Giant God Gagadom
Gordom Minions: Mogari - Modified Mythical Beast Gordorum - Desperado
Jaryuu Clan
Creator King Ryuuwon - Dragonoid Soldier Jaryuu
Great Evil Dragons: Great Evil Dragon Dold - Great Evil Dragon Zard - Great Evil Dragon Girad - Great Evil Dragon Zorad - Evil Mechanic Dragon Grand
Wicked Dragons: Dryken - Lindom - Naga - Ragi - Talong - Dembey - Tagargin
Dark Shadow
Gekkou of Illusions - Shizuka of the Wind - Yaiba of Darkness
Tsukumogami: Jougami - Takumigami - Kawazugami - Kanadegami - Nendogami - Zukangami - Akutagami - Shirubegami - Mamorigami
Ashu Tribe
Furious Demon God Gai - Grand Beast Rei - Hyouga - Ouga
Quester Robos: Quester Robo Turbo - Quester Robo Elite - Quester Robo Cannon - Quester Robo Blaze - Quester Robo Radial - Homunculus Quester Jet Over
Precious Creatures
Madness Weather - Vril - Prince - Hyde Gene - Lemurian Mythical Beast - Golem - Time Demon God Chronos - Prometheus' Stone - Ultimate Artificial Lifeform Homunculus - Cosmic Kenpō Master Pachacamac XII
Black Rangers
Main Series
Shirou AkebonoKanpei KurodaRyuu HoshikawaShou HayateKentaTetsuya YanoDaichi YamagataFumiya HoshikawaGai YukiGoushiJiraiyaRikiKouichirou EndouSotaro UshigomeAsukaMasumi InouGunpei IshiharaAgriIan YorklandMisao MondouChampBambaTsubasa Inuzuka

Secondary Rangers
Shota YamamoriVRV MasterBullBlackHyuugaRio
Deathdark BlackGinga BlackGolemNeziBlackCopyBlackShade GaoBlackManmarubaYousuke ShiinaEvil Bouken BlackTakeshi KurokiIcchanRight SuzukiKaito Goshikida

Power Sets
Main Series
Battle KenyaGoggleBlackDynaBlackChangeGriffonBlack MaskBlack BisonBlack TurboFiveBlackBlack CondorMammothRangerNinjaBlackKingRangerMegaBlackBlack KnightGaoBlackHurricaneDarkAbareBlackBouken BlackGo-On BlackGosei BlackBlack PumaKyoryu BlackZyuoh The WorldOushi BlackRyusoul BlackInu BrotherZenkaizer Black
Brave Black Dino