Icon-jakq.png This article is about a/an Ranger in J.A.K.Q. Dengekitai.

"Dia Jack!"
―Dia Jack's roll call[src]

"Unbeatable speed! The blue star!"
―Spade Ace's second roll call[src]

Ryu Higashi (東 竜 Higashi Ryū) is Dia Jack (ダイヤジャック Daiya Jakku) and was the original second-in-command 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. Tvicon.png TV STORY-Ep. 1: 4 Cards!! The Trump is J.A.K.Q.


Dummy JAKQ.

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

J.A.K.Q. Dengekitai vs. Gorenger

To be added. Tvicon.png TV STORY-J.A.K.Q. Dengekitai vs. Gorenger

Sun Vulcan


In a Sun Vulcan Issue, Battle Kenya, Dia Jack, VulEagle, DenziRed and Kirenger were shown.

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

Super Hero Taisen

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. Tvicon.png TV STORY-Kamen Rider × Super Sentai: Super Hero Taisen

Zyuohger vs. Ninninger

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. Tvicon.png TV STORY-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.

Dia Jack

Dia Jack

As Dia Jack, Ryu's cybernetic enhancements allowed him to manipulate Electrical Energy in a variety of ways:

  • Electric Cutter (エレキカッター Ereki Kattā): An electric sawblade in his right middle finger that can cut through anything.
  • Dia Laser (ダイヤレーザー Daiya Rēzā): A laser in his left index finger that can cut through walls.

Dia Jack wields the Dia Sword (ダイヤソード Daiya Sōdo), an electrical-powered sword. Electrical Energy flows through the blade, allowing it to cut through anything.

Powers and Abilities


to be added

  • Lightning Kick (電光キック Denkō Kikku): Dia Jack jumps and perform an Electrical-powered kick.
  • Double Kick (二段キック Nidan Kikku): Dia Jack jumps and kicks two enemies at once.
  • Lightning Slash (稲妻斬り Inazuma Giri): Dia Jack leaps towards the enemy and slashes them.
  • Electrical X Cutter (電気エックスカッター Denki Ekkusu Kattā): Dia Jack slashes the enemy in a X-shaped pattern.
  • Dia Spark (ダイヤスパーク Daiya Supāku): Dia Jack channels Electrical Energy through his sword to electrocute enemies.
  • Electrical Spark (電気スパーク Denki Supāku): Dia Jack channels Electrical Energy through his sword before jamming it into the ground, electrifying it.
  • Bamboo Split (唐竹割り Karatake Wari): Dia Jack slashes the enemy horizontally at high speeds.
  • 6 Man Slash (6人斬り Rokuri Giri): Dia Jack spins in a circle, slashing 6 enemies in one rotation.
  • Rotation Slash (回転斬り Kaiten Giri): Dia Jack spins in the air and slashes the enemy.


to be added


to be added



Behind the Scenes



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


to be added

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. 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. It is presumed that Ryuu received his key and became Dia Jack once more.


  • 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.
  • 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]
  • Ryu is the only member of his team who did not join the Super Sentai Strongest Battle


Super Sentai Battle: Dice-O

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. as seen in Super Sentai Legend Wars.

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

External links


  1. Ishinomori Hero File
Icon-jakq.png J.A.K.Q. Dengekitai
Goro Sakurai - Ryu Higashi - Karen Mizuki - Bunta Daichi - Sokichi Banba
Powered Capsules - Red Rose - Spade Arts - Dia Sword - Heart Cute - Club Megaton - Big Baton - Big Bomber - JAKQ Vehicles - Jack Tank
Commander Daisuke Kujirai - Tamasaburou Hime - Hamster-kun - Gorengers - Gaorangers - Gokaigers - Minor Characters
Sky Ace
Boss Iron Claw - Shine - Crime Boss - Crimers - Crime Big Four (Baron Iron Mask - General Sahara - Captain UFO - Hell Boxer)
CRIME Monsters
Devil Killer - Devil Drill - Devil Mite - Devil Gun - Devil Wrestler - Devil Amazon - Devil Electric - Devil Flower - Devil Spider - Devil Cane - Devil Gang - Devil Sphinx - Devil Goo - Devil Wolf - Devil Mummy - Devil Ball - Devil Devil - Devil Fishing - Devil Athletic - Devil BEM - Devil Batter - Devil Scrap
Invader Robots
Atomic Witch - Hell's Angel - General Antongam - Captain Ghost - Führer Crocodile - Tentacles Lay Priest - Chief Mantis - Great Priest Cobra - Shachira Khan - Battalion Leader Chameleon - Admiral Buffalo - Great King Icarus - Warrior Iron Claw
Blue Rangers
Main Series
Akira ShinmeiRyu HigashiKyousuke ShidaDaigoro OumeKin'ya SamejimaSaburo AoyamaYosuke ShimaRyuuta NanbaraYuuma OzoraBunAkiraMegumi MisakiYouhei HamaKen HoshikawaAko HayasakaDanShojiSaizouYuji MitaNaoki DomonShun NamikiGoukiNagare TatsumiAyaseKai SamezuNanami NonoYukito SanjyouHouji TomasuUrara OzuSouta MogamiRetsu FukamiRenn KousakaRyunosuke IkenamiHydeJoe GibkenRyuji IwasakiNobuharu UdoHaru TokashikiYakumo KatouSelaGaruTouma YoimachiMeltoShiguru OshikiriVroonShinichi Saruhara

Secondary Rangers
NinjamanGunmazinSignalmanIsshuu KasumiRamirezYuko FukuiKotaro Sakuma
EAGLE agentDummy Dia JackDeathdark BlueGinga BlueShadow Blue SwallowGolemPrevious TenmaRangerCopy TenmaRangerShoji's grandsonFlower Ninja AyameZokuBlueNeziBlueCopy TimeBlueCopyBlueShade GaoBlueWendinuFake HurricaneBlueFake KuwagaRaigerAyameganezumiEvil MagiBlueVrilEvil Bouken BlueKarthRyuzaburoRyujiDDai-kunNobuta-sanAmi-neesan

Power Sets
Main Series
AorengerDia JackBattle FranceDenziBlueVulSharkGoggleBlueDynaBlueBlue3ChangePegasusBlue FlashBlue MaskBlue DolphinBlue TurboFiveBlueBlue SwallowTriceraRangerTenmaRangerNinjaBlueOhBlueBlue RacerMegaBlueGingaBlueGoBlueTimeBlueGaoBlueHurricaneBlueKuwagaRaigerAbareBlueDekaBlueMagiBlueBouken BlueGekiBlueGo-On BlueShinken BlueGosei BlueGokai BlueBlue BusterBlue GorillaKyoryu BlueKyoryu CyanDeathryugerKyoryu NavyToQ 2gouAoNingerZyuoh SharkOokami BlueKoguma SkyblueLupinBlueRyusoul BlueKiramai BlueZenkai VroonSaruBrother
AkibaBlueBrave Blue DinoAoiHero