The eponymous Kyurangers is a team of warriors composed of humanoids, androids, and animalistic aliens from different star systems who serve as members of the Rebellion (リベリオン, Riberion), an insurrection army fighting to liberate the universe from the evil Jark Matter syndicate, using the powers of magical stones called Kyutamas.
After obtaining the Tokei Kyutama, the team splits into two factions; with one staying in the present to rescue one of their companions while the other travels to the past to learn more about Jark Matter's leader, Don Armage.
[5] Lucky (ラッキー, Rakkī) is a naive young man and interstellar traveler with amazing luck and a strong will from Planet Luth (惑星ルース, Wakusei Rūsu) in the Leo Minor System (コジシ座系, Kojishi-za-kei).
The former trait eventually resulted in Lucky becoming his homeworld's king after discovering his father Aslan was supposed to have been murdered by Jark Matter's Fuku Shogun Kukuruga years prior, but was instead brainwashed into one of Don Armage's thralls.
[11] Stinger (スティンガー, Sutingā) is a cool, mysterious humanoid alien with a scorpion-like tail capable of producing a venom that can affect organic and mechanical targets from Planet Needle (惑星ニードル, Wakusei Nīdoru) in the Scorpio System (サソリ座系, Sasori-za-kei).
Amidst his final battle with Scorpio, Stinger injected himself with own venom to use their people's Antares (アンタレス, Antaresu) technique to boost his strength, even in spite of the life-threatening cost before his brother extracted it from him and redeemed himself by giving his life to save the Kyurangers.
[14] As the "Poison Star" (ポイズンスター, Poizun Sutā), Sasori Orange, Stinger's main weapon is the Kyu Spear (キュースピア, Kyū Supia), which allows him to perform the Antares Impact (アンタレスインパクト, Antaresu Inpakuto) finisher.
[12] Garu (ガル) is a lupine alien with Hiroshima dialect from the Lupus System (オオカミ座系, Ōkami-za-kei) who lost his pride, homeworld, and entire clan to Jark Matter.
[15] As the "Beast Star" (ビーストスター, Bīsuto Sutā), Ookami Blue (オオカミブルー, Ōkami Burū),[2][6] Garu's main weapon is the Kyu Claw (キュークロー, Kyū Kurō), which allows him to perform the Lupus Impact (ルプスインパクト, Rupusu Inpakuto) finisher.
After traveling back in time to learn more about Don Armage, Champ stayed behind in the past with Shou Ronpo to ensure the Kyurangers' formation and put his commander in cryogenic stasis.
[19] He eventually rejoins his allies in the present, but Anton's evil-half uses a mind control chip in Champ's circuitry to reinstate his original programming before Stinger saved him.
[6] Naga Ray (ナーガ・レイ, Nāga Rei) is a young humanoid alien with the ability to temporarily paralyze his targets from the Ophiuchus System (ヘビツカイ座系, Hebitsukai-za-kei),[2] whose people are identical in appearance.
[27] Raptor 283 (ラプター283, Raputā Ni Hachi San) is a serious and loyal android built on Planet Rebellion (惑星リベリオン, Wakusei Riberion) in the Aquila System (ワシ座系, Washi-za-kei).
[2][6][28] As the "Speed Star" (スピードスター, Supīdo Sutā), Washi Pink, Raptor's main weapon is the Kyu Shot (キューショット, Kyū Shotto) handgun, which allows her to perform the Altair Impact (アルタイルインパクト, Arutairu Inpakuto) finisher.
[2][30] After traveling back in time to learn more about Don Armage, Shou remained in the past with Champ to ensure the Kyurangers assemble in the future before being put into cryogenic stasis inside the Battle Orion Ship, where his team finds him in the present.
Shou's suit differs from the others in that it has gold lining and edging, is covered in a trenchcoat-like fabric, the star symbol on his chest is centralized rather than based over the left breast and is connected to black shoulder pads, and the belt is golden.
Kotaro's suit differs from the others in that it is adorned with a pair of mittens that hide bear-like claws for increased hand-to-hand combat capabilities and his helmet has bear ear-like protrusions.
Leading Jark Matter for the next 333 years, he oversaw his campaign via holograms from Planet Southern Cross (惑星サザンクロス, Wakusei Sazan Kurosu) in the Crux System, which he also used as a test site for his Planedium Bomb.
[1][104] Cuervo (クエルボ, Kuerubo) is a crow-like alien and former prisoner of Jark Matter's boot camp from Planet Verona (惑星ベローナ, Wakusei Berōna) in the Corvus System (カラス座系, Karasu-za-kei).
[104] An enlarged Akyachuga is sent to defend Planet Southern Cross' core against the Kyurangers before being destroyed by KyurenOh (01-02-03-05-11), RyuTeiOh (07-09-10), and Gigant Houoh using the Battle Orion Ship in its cannon mode.
Originally wielding the Medusaber (メドウサーベル, Medōsāberu) saber when Jark Matter was founded, Kukulga has his left arm outfitted with the Kukulgun (ククルガン, Kukurugan) cannon by the present.
[104][46] This resulted in Anton being able to act independently of his evil-half, allowing him to leave Jark Matter to prevent the newly built Champ from being used for evil and teach his creation to value all forms of life.
With Mecha Mardakko's help, he kidnaps Champ and restores his prime directive as a war machine before Stinger destroyed the berserker chip, freeing his ally from the Anton Brain's control.
[111] While he was originally humanoid like Stinger and their people, Don Armage mutated him into a sea scorpion/crop circle-themed monstrous being with the ability to wrap his tail around his leg and perform a powerful kick attack.
[43] Ikargen (イカーゲン, Ikāgen) is a kraken-themed assassin with hundreds of eyes surrounding his body from Planet Crystalikall (惑星クリスタルイカル, Wakusei Kurisutaruikaru) in the Crux System who wields the Gesword Rifle (ゲソードライフル, Gesōdo Raifuru), which can double as a sword.
[104] Throughout his career as a Jark Matter assassin, he has destroyed over one thousand planets alongside Mardakko and brought the Rebellion to the brink of destruction after killing their leader, Big Bear.
[43][104] Mardakko (マーダッコ, Mādakko) is a gigantic octopus-themed assassin with regenerative capabilities from Planet Crystakoskull (惑星クリスタコスカル, Wakusei Kurisutakosukaru) in the Octans System (ハチブンギ座系, Hachibungi-za-kei) who can regenerate lost limbs and resurrect herself from any trace of her physical remains,[11][104] though she develops a new personality as a result.
In both her original form and as Mecha Mardakko, she wields the Octopus-Wiring Electromagnetic Scattering Whip (タコ足配線電磁バラバラムチ, Takoashi Haisen Denji Barabara Muchi), the Tacommand Vulcan (タコマンドバルカン, Takomando Barukan) Gatling gun, the Tachometer Tentaclaymore (タコメーター付テンタクレイモア, Takomētā-tsuki Tentakureimoa) sword, the Takoyakiller (タコヤキラー, Takoyakirā) morning star, and the Shock Shooter (ショックシューター, Shokku Shūtā) handgun.
He would later meet and join forces with the Kyurangers after half of them traveled back in time to learn more about Don Armage and help his distant descendant Lucky unlock the Saiko Kyutama.
After Orion died in battle against Don Armage, Shou Ronpo and Champ chose to stay behind in the past to take his place in ensuring the Kyurangers assemble in the present.