Icon-rpm.pngThis article is about a/an ranger in Engine Sentai Go-Onger.

"Just Correct!! Go-On Blue!"
―Go-On Blue's roll call[src]

Renn Kousaka (香坂 連 Kōsaka Ren) is Go-On Blue (ゴーオンブルー Gōon Burū) of the Go-Ongers. Nicknamed the "Cyclopedia" for his attention to the smallest detail, is a former bus driver who tends to be somewhat talkative.



Because of his doting personality and cooking expertise, he has been referred to as the Go-Ongers' "mother" (オカン okan) by the other Go-Ongers and even his own Engine partner, Engine Bus-on; he takes no offense to and even revels in the reference. The son of a family that runs a beach-side inn, Renn, as a young boy, prayed and offered omelets every day to a guardian statue in the eventually futile hope that his sickly mother would recover. The guardian statue turned out to be the sealed form of the Arerunbra Uzumaquixote, which Renn learned only after Air Pollution Minister Kitaneidas and Water Pollution Minister Kegalesia tried to claim it. Renn carries a small memo notebook, which is the source of his massive knowledge; in it, he jots down notes about and draws doodles of the enemies the team faces, even in the middle of a fight. Not only is Renn the "mother" of the team, but he is also the chief technician; he made modifications to the Engines so they could come together in the Engine-O G6 and Engine-O G9 formations, developed the Kyuyu Soul and the Double Engine Soul Kankanbar, and assisted the Go-on Wings in fine-tuning the Armored Wheel GoRoader GT. After the final battle, Renn becomes Sosuke Esumi's mechanic in the go-kart racing circuit.

As Go-on Blue, Renn's physical strength is magnified. After transforming into Go-on Blue, Renn says, "Just Correct!! Go-on Blue" (ズバリ正解!!ゴーオンブルー Zubari Seikai!! Gōon Burū). With the Mantan Gun in Rod Mode, he can perform the Go-on Drift (ゴーオンドリフト Gōon Dorifuto). With the Mantan Gun in Gun Mode he can perform the Sniper Shoot (スナイパーシュート Sunaipā Shūto). With the Garage Launcher (ガレージランチャー Garēji Ranchā) he can perform Launcher Starter (ランチャースターター Ranchā Sutātā) and Jumping Attack (ジャンピングアタック Janpingu Atakku).

Encountering the Gekiranger, the Go-Ongers lose the Engine Souls to the Gaiark and Meka. With Retsu Fukami and Gou Fukami's help Renn and Hanto manage to gain Geki. With Engine-Ken, a new type of Geki fighting fist, Renn was able to access his beast spirit (which turned out to be Bus-on). With this he performs On On Dan, where Bus-on, apart of his Engine Soul attacks, as a manifestation of will.

Shinkenger vs. Go-Onger

To be added Tvicon.png TV STORY-Samurai Sentai Shinkenger vs. Go-Onger: GinmakuBang!!


Legend War

A few years later, Renn 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 defeat of Ackdos Gill, the Gokaiger returned all the Ranger Keys to the former Sentai heroes. Renn and his team have their powers again. Tvicon.png TV STORY-Final Ep.: Farewell Space Pirates

Super Hero Taisen

The Go-Ongers, alongside the Gekirangers, Gorengers (bar Akarenger), Goseigers, and Shinkengers, emerge through a dimensional wall.

Renn, alongside his team (the Go-On Wings 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. Tvicon.png TV STORY-Kamen Rider × Super Sentai: Super Hero Taisen

Zyuohger vs. Ninninger

The first 38 Sentai projected into Wild Tousai Shuriken King.

Go-On Blue appeared with his team among the first 38 Super Sentai whom 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

Renn joined the Super Sentai Strongest Battle as a member of Gunman Team, where he won the first round after fighting Gosei Pink of Pink Warrior Team. It’s unknown whether he participated in any of the other matches, but his team was eliminated either after losing the second round against the Brain Team or the third round against the Swordsman Team.


Kozukozu Mita cosplays as Renn in the seventh episode of Hikonin Sentai Akibaranger: Season Two. Tvicon.png TV STORY-Ep. 7: Delusional Spy

Video game appearances

Super Sentai Battle: Ranger Cross

Go-On Blue appears with his team in Super Sentai Battle: Ranger Cross.

Super Sentai Battle: Dice-O

Go-On Blue as depicted in Super Sentai Battle: Dice-O.

  • Profile
Renn Kousaka/Go-On Blue: to be added

Super Sentai Battle Base

Go-On Blue is among the vast pantheon of Rangers which are available in the mobile game Super Sentai Battle Base.

Super Sentai Legend Wars

Go-On Blue Card

Go-On Blue appears with his team among all Sentai in the mobile game Super Sentai Legend Wars.

Go-On Blue

Go-On Blue




  • Go-On Drift: where the wheels on his suit began to spin rapidly then laid his front body on the ground, before he slides through it ramming to enemies like a car.

Transformation and Roll Call

Ranger Key

The Go-On Blue Ranger Key.

Mobilates' Gokai Change announcement[src]

The Go-On Blue Ranger Key (ゴーオンブルーレンジャーキー Gōon Burū Renjā Kī) is Renn Kousaka'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 Go-On Blue Ranger Key was mainly used by Joe Gibken (Gokai Blue), who used it to fight as Go-On Blue.

After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. It is presumed that Renn received his key and became Go-On Blue once more.

Behind the scenes


Renn Kousaka is portrayed by Shinwa Kataoka (片岡 信和 Kataoka Shinwa). As a child, he is portrayed by Shunpei Ijuin (伊集院 竣平 Ijūin Shunpei).

As Go-On Blue, his suit actor was Yoshifumi Oshikawa (押川 善文 Oshikawa Yoshifumi). In Engine Sentai Go-Onger: 10 Years Grand Prix, he was portrayed by Hirotsugu Mori (森 博嗣 Mori Hirotsugu).

In the video game Super Sentai Battle: Ranger Cross, Go-On Blue was voiced by Yugo Takahashi (高橋 裕吾 Takahashi Yugo), who also filled in for Gosei Red.

Dub names

In the Korean dub of Go-Onger entitled Power Rangers Engine Force, which aired in South Korea, Renn keeps his name, while his Ranger designation is Engine Blue.


See Also

External links

Icon-rpm.png Engine Sentai Go-Onger
Go-Ongers: Sosuke Esumi - Renn Kousaka - Saki Rouyama - Hant Jou - Gunpei Ishihara
Go-On Wings: Hiroto Sutou - Miu Sutou
Go-Phone - Shift Changer - Wing Trigger - Souls - Mantan Gun - Handle Blaster - Rocket Dagger - Wing Booster - Road Saber - Garage Launcher - Racing Bullet - Bridge Axe - Cowl Laser - Super Highway Buster - Kankanbar - Kankan Mantan Gun
Engines: Engine Speedor - Engine Bus-on - Engine BearRV - Engine Birca - Engine Gunpherd - Engine Carrigator - Engine Toripter - Engine Jetras - Engine Jum-bowhale - Engine Kishamoth - Engine T-line - Engine K-line - Engine Retsu-Taka - Engine Shishi-no-Shin - Engine Tsuki-no-Wa
Gekirangers - Shinkengers - Gokaigers
Engine-O - GunBir-O - Engine-O G6 - Seikuu-O - Engine-O G9 - Kyoretsu-O - Engine-O G12 - GoRoader GT - Engine Dai-Shogun - Engine-O G7
Banki Clan Gaiark
Pollution President Batcheed - Pollution President Babatcheed (Gokaiger) - Crime Minister Yogoshimacritein - Cleaning Minister Kireizky - Danger Cabinet-Director Chirakasonne - Land Pollution Minister Yogostein - Land Pollution Vice-Minister Hiramechimedes - Air Pollution Minister Kitaneidas - Water Pollution Minister Kegalesia - Ugatz - Barbaric Dohma - Barbaric Dohma SP
Barbaric Machine Beasts
Incinerator Banki - Pipe Banki - Scoop Banki - Spray Banki - Magnet Banki - Speaker Banki - Bombe Banki - Boring Banki - Lens Banki - Mirror Banki - Antenna Banki - Generator Banki - Trigger Banki - Pot Banki - Oil Banki - Rock Blast Banki - Vacuum Banki - Saw Banki (Chainsaw Banki) - Balloon Banki - Spinning Banki - Dowsing Banki - Manhole Banki - Hammer Banki - Straw Banki - Drill Banki - Heater Banki - Engine Banki - Nunchuck Banki - Shower Banki - Yatai Banki - (Maho)Bin Banki - Dumbbell Banki - Kettei Banki
Banki Clan Arelunbra Family
Water Pollution Prince Nigorl zo Arelunbra - Water Pollution Machine Knight Uzumaquixote
Eleki Clan Zontark
Noizoon - Grayzky - Noizumi Children
Other Villains
Empress Maki - Raiken - Gokumaru - Rairaiken - Gokugokumaru - Hirameki Bakki - Lumbiaco - Barbaric Machine Clan Horonderthal - Wameikle
Blue Rangers
Main Series

Secondary Rangers
NinjamanGunmazinSignalmanIsshuuRamirezYuko FukuiKotaro Sakuma
EAGLE agentDummy Dia JackDeathdark BlueGinga BlueShadow Blue SwallowGolem
Previous TenmaRangerCopy TenmaRangerShoji's grandsonFlower Ninja AyameZokuBlueNeziBlue
Copy TimeBlueCopyBlueShade GaoBlueWendinuFake HurricaneBlueFake KuwagaRaiger
AyameganezumiEvil MagiBlueVrilEvil Bouken BlueKarthRyuzaburoRyujiDDai-kun

Power Sets
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AorengerDia JackBattle FranceDenziBlueVulSharkGoggleBlueDynaBlueBlue3ChangePegasus
Blue FlashBlue MaskBlue DolphinBlue TurboFiveBlueBlue SwallowTriceraRangerTenmaRangerNinjaBlue
OhBlueBlue RacerMegaBlueGingaBlueGoBlueTimeBlueGaoBlueHurricaneBlueKuwagaRaigerAbareBlue
DekaBlueMagiBlueBouken BlueGekiBlueGo-On BlueShinken BlueGosei BlueGokai BlueBlue Buster
Blue GorillaKyoryu BlueKyoryu CyanDeathryugerKyoryu NavyToQ 2gouAoNingerZyuoh Shark
Ookami BlueKoguma/Ooguma SkyblueLupinBlueRyusoul BlueKirama BlueZenkaiVroon
AkibaBlueBrave Blue DinoBlue Hero