This article is about a/an ranger in J.A.K.Q. Dengekitai.
"Dia Jack!"
―Dia Jack's roll call[src]

Ryu Higashi (東 竜 Higashi Ryū) is Dia Jack (ダイヤジャック Daiya Jakku) of J.A.K.Q.. He is a former welterweight boxing champion of Japan.



Falsely accused of murder by greedy boxing promoters in Las Vegas when he refused to rig a championship fight, Ryu was intercepted by Joker when he was being extradited to Japan for prosecution. Offered the choice of working for ISSIS as part of JAKQ or serving his prison sentence, Ryu reluctantly accepted Joker's offer. Ep. 1: 4 Cards!! The Trump is J.A.K.Q.

vs. Gorenger

to be added J.A.K.Q. Dengekitai vs. Gorenger

Sun Vulcan


to be added

Gaoranger vs. Super Sentai

Dia Jack is among the Sentai warriors seen in clips when Yusuke Amamiya (Red Falcon) lectured Gaku Washio (GaoYellow) about the past Sentai sword experts, showing him that the true sword wasn't the sharpest, but the one that feeds on courage. Hyakujuu Sentai Gaoranger vs. Super Sentai


Legend War

Years later, Ryu 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. The Dia Jack powers are later utilized by Joe Gibken via the Ranger Keys. Ep. 1: The Space Pirates Appear Gokaiger Goseiger Super Sentai 199 Hero Great Battle

Farewell Space Pirates

After the Zangyack's final defeat, Marvelous returned the Ranger Keys to their original owners. It is assumed Ryuu and his teammates have their powers once again. Final Ep.: Farewell Space Pirates

Super Hero Taisen

Dimensional wall - Sun Vulcan, Battle Fever, JAKQ, Denziman

J.A.K.Q., alongside Sun Vulcan, Battle Fever, and the Denzimen, emerge through a dimensional wall.

Ryuu, alongside his team, 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. Kamen Rider × Super Sentai: Super Hero Taisen

Zyuohger vs. Ninninger

All 40 Super Sentais

The first 38 Sentai projected into Wild Tousai Shuriken King.

Dia Jack 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. Doubutsu Sentai Zyuohger vs. Ninninger: Message from the Future from Super Sentai


Ryu is a rough and gruff individual who is at times very headstrong and tends to prefer working alone, though he continues to keep in touch with his former boxing partners. Ryu loves jazz music and fast cars.

Video game appearances

Super Sentai Battle: Dice-O

Dia Jack

Dia Jack as depicted in Super Sentai Battle: Dice-O.

  • Profile:
Ryu Higashi/Dia Jack: A hot-blooded warrior empowered with electrical energy. He defeats many crimers with his natural speed and his Dia Sword.

Super Sentai Battle Base

Dia Jack is among the vast pantheon of Rangers which are available in the mobile game Super Sentai Battle Base.

Super Sentai Legend Wars

J.A.K.Q. Dengekitai in Super Sentai Legend Wars

J.A.K.Q. as seen in Super Sentai Legend Wars.

Dia Jack appears with his team among all Sentai in the mobile game Super Sentai Legend Wars.

Dia Jack


Dia Jack

As Dia Jack, Higashi's cybernetic enhancements enable him to manipulate electric energy which he primarily focuses through the powerful Dia Sword he wields, enhancing it's cutting power or firing bolts of electricity from it.

He is also equipped with an "Elek Cutter" [Electric Cutter] in his right second finger and the "Dia Laser" ins his left ring finger.



Dia Jack wears a blue cloth suit with white arms and a sash that possess several holsters within it with a bronze-colored medal around the right side with the letter "J", representing the Jack. His gloves are blue while his boots are white in color with black cuffs. A silver belt with more holsters surround his body with the buckle for J.A.K.Q. in the center; while with a small yellow cape around his back. His helmet possesses a blue diamond representing his card suite, surrounded in a field of white. Above the Diamond is the letter "J".

Ranger Key

Dia Jack Ranger Key

The Dia Jack Ranger Key.

The Dia Jack Ranger Key (ダイヤジャックレンジャーキー Daiya Jakku Renjā Kī) is Ryuu Higashi'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 Dia Jack Ranger Key was mainly used by Joe Gibken (Gokai Blue), who used it to fight as Dia Jack.

The J.A.K.Q. 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. The J.A.K.Q. keys were defeated by Super Gosei Red. Gokaiger Goseiger Super Sentai 199 Hero Great Battle

After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. It is presumed that Ryuu received his key and became Dia Jack once more.


Dummy JAKQ

Dummy JAKQ.

A Crimer posed as Dia Jack as part of a Dummy JAKQ team, who sparred with Devil Scrap's Scrap Gundan. Ep. 22: Big Red Counterattack!! Attack the Suicide Bomber Army

Behind the scenes


Ryu Higashi was portrayed by Tairayama Itou (伊東平山). As Dia Jack, his suit actor was Hiromichi Suzuki.


Dia Jack is featured as #54 in the 1986 archive compilation video Toei 100 Great Heroes Super FightIcon-crosswiki.


  • Shares his first name with Ryu Tendo/Red Hawk from Choujin Sentai Jetman.
  • He is the first Blue Ranger to have "ryu" in his name, and the only one to have the "dragon" kanji as a part of his name. This would be followed with Ryuuta Nanbara (Blue Three) from Choudenshi Bioman, Ryunosuke Ikenami (Shinken Blue) from Samurai Sentai Shinkenger, and Ryuji Iwasaki (Blue Buster) from Tokumei Sentai Go-Busters.
  • His translated name, in Eastern format, is "East Dragon". This is a reference to the Azure Dragon (known as 青竜, Seiryu in Japan), the Dragon Guardian Spirit of the East.
  • Ryu is the very first Sentai hero to use a sword in combat.
  • In the Ishinomori Hero File Book, it revealed the concept designs of the JAKQ team. Dia Jack was originally intended to be the Red Ranger of the team, however, this was later changed as his color was swapped for Spade Ace's original blue color and Spade Ace became Red. [1] Despite this, a red hero from another franchiseIcon-crosswiki would later wear the Suit of Diamonds as a motif.
  • Ryu is the only member of his team who did not join the Super Sentai Strongest Battle


External links


  1. Ishinomori Hero File

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
Main Series
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 Blue
AkibaBlueBrave Blue Dino

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