The eponymous Ryusoulgers are members of the Ryusoul Tribe (リュウソウ族, Ryūsō-zoku), an ancient race that has existed since the age of the dinosaurs who were originally warlike in the past.
The Ryusoul Tribe made their home in an isolated mountain village in Aokigahara where they pass the Ryusoulger mantle from master to apprentice while safeguarding the temple holding the Kishiryu.
[2] After the Ryusoulgers acquired the Ryusoul Calibur (リュウソウカリバー, Ryūsōkaribā), a legendary sword that previously served to maintain the seal on Eras, its wielder can transform into an armored and caped Noblesse (ノブレス, Noburesu) form that can perform one of two finishers: Extreme Dino Slash (エクストリームディーノスラッシュ, Ekusutorīmu Dīno Surasshu) via their personal Ryusouls or Ultimate Dino Slash (アルティメットディーノスラッシュ, Arutimetto Dīno Surasshu) via the KyoRyuSouls.
Due to his tribe being few in number, Canalo came ashore to find a wife,[18] but ends up joining forces with the Ryusoulgers after he realizes they are nothing like their ancestors.
[33] The Kishiryu (騎士竜, Kishiryū, Knightosaur)[38] are sentient dinosaurs that were created by the Ryusoul Tribe as a countermeasure to the Druidon before being sealed within temples throughout the world.
Oto (オト) is Canalo's 123-year-old sister and member of the Sea Ryusoul Tribe who resembles a young teenage girl.
[33][12][5] As the Ryusoulgers' final battle against the Druidon Tribe approaches,[54] Seto uses the last of his powers to become Ryusoul Brown (リュウソウブラウン, Ryūsō Buraun) and pass on to the afterlife at the end of his duty.
As a result, Master Green was forced to leave Earth to stop Gaisoulg's rampage and presumed to have died of natural causes as the cursed armor wandered the cosmos until the events of Super Sentai Strongest Battle.
The Warfare Tribe Druidon (戦闘民族ドルイドン, Sentō Minzoku Doruidon)[1][64] are a race of evil monsters led by chess piece-themed generals who existed alongside the Ryusoul Tribe and sought world dominion before they were forced to flee into space during the extinction event that killed the dinosaurs.
[2] As the series progresses, the Druidon are revealed to have been created by Eras as a means to exterminate her previous creation, the Ryusoul Tribe, after they became warlike and aggressive.
[3] When Seto learns she is siphoning the sword's energy in the present, he is forced to have the Ryusoulgers retrieve the Ryusoul Calibur in order to save it.
Nonetheless, the Ryusoulgers manage to escape their slumber with Kleon's help,[66] weaken Eras with their Kishiryu and the Ryusoul Calibur, and destroy her.
As his death would have released all of the energy in a destructive wave, the Ryusoulgers use KishiryuOh Five Knights to blast Tankjoh into the stratosphere in order to destroy him safely.
[26] Several months later, Tankjoh is resurrected by the Necromancer Minosaur and attempts to exact revenge against the Ryusoulgers for his death,[12] only to be sent back to the afterlife by Ryusoul Pink, Blue, Green, and Black.
[13] In battle, Tankjoh is armed with the Rooklaymore (ルークレイモア, Rūkureimoa) broadsword and can fire energy beams from his chest-mounted Castlingrander (キャスリングランダー, Kyasuringurandā) cannon.
[18][47][44] When Gachireus eventually returns, Wiserue shares command with him until Pricious arrives and subjugates them both by taking control of their hearts.
[36][58] When Eras' resurrection draws near,[10] Wiserue is forced to attack the Ryusoulgers to prove his worth to the Druidon cause and is seemingly killed in battle by Max Ryusoul Red.
[65] In battle, Wiserue is armed with the Stickiller (ステッキラー, Sutekkirā) staff that can fire energy bolts and doubles as a sword, possesses hypnotism through his eyes, and illusion-based shapeshifting.
[18] He briefly takes command of the Druidon's invasion of Earth after sending Wiserue away for not doing the job fast enough and overpowers the Ryusoulgers once he learns enough of their techniques.
[47] In reality, Gachireus survived and left the planet to treat his wounds before returning months later to exact revenge against the Ryusoul Tribe.
[69][5][70] In battle, Gachireus is armed with the shoulder-mounted Gachiraid Cannons (ガチレイド砲, Gachireido Hō) and the Screw Claw (スクリュークロー, Sukuryū Kurō) gauntlets as well as the ability to increase his strength by countering any attack he takes once he is hit with it or sees it once.
He arrives to Earth following Uden's demise to revive Eras, usurping Wiserue and Gachireus as the invasion's acting leader by taking control of their hearts in the process.
[65] In battle, Pricious is armed with the double-bladed Priciouslasher (プリシャスラッシャー, Purishasurasshā) naginata, a deck of cards which he can manipulate to produce different effects, and the ability to teleport by turning himself into liquid metal.
He also commands a Space Dragon (スペースドラゴン, Supēsu Doragon), a giant draconic cyborg monster,[58] until it is destroyed by King KishiryuOh.
Yabasword (ヤバソード, Yabasōdo) is an infantile king/samurai-themed Druidon general who Eras creates after the Gunjoji brothers once her resurrection is nearly completed.
[2] After being exposed to Kleon's slime, Ui became the Medusa Minosaur's host before she is saved when the monster is destroyed by KishiryuOh Three Knights.
Gaisoulg (ガイソーグ, Gaisōgu) is a violet-colored animated suit of armor that was created by the ancient Ryusoul Tribesman Valma during his people's war with the Druidon.
However, it was sealed away when it attained sentience after absorbing an excessive amount of hatred and developed an insatiable craving for a strong opponent to battle and possess.
[34] Five centuries before the events of the series, Gaisoulg was unsealed by Master Green when he was forced to wear the armor in order to fend off a Druidon attack.
[35][36] After the Ryusoulgers discover his use of the Gaisoulg armor and purify it of the hatred that made it sentient,[60][49] Nada attains full control of it and joins them as their seventh member, with the title of the "Indomitable Knight" (不屈の騎士, Fukutsu no Kishi).