The series takes place in a fictional universe that exists as a parallel world where vast numbers of humans, as well as species known as sentenoids and demonoids, fight using weapons, magic, and evil artifacts known as Dark Brings (Shadow Stones in the anime's English dub).
The Rave Warriors consist of a thief that can manipulate silver known as Hamrio Musica, a cartographer called Griffon Katou who is also a strange blue creature, Let Dahaka and Julia Dragoon who are both martial artists and members of a species known as the Dragon Race, Ruby, a rich penguin-like sentenoid, and Belnika, a kind sorceress.
Voiced by: Ayako Kawasumi (Japanese); Michelle Ruff[2] (English) Elie (エリー, Erī) is a mysterious girl with amnesia, who uses tonfa-blasters as her main weapon of choice.
Etherion was also used by Resha Valentine (リーシャ・バレンタイン, Rīsha Barentain), an acclaimed dancer from 50 years prior who gave her life in order to create the Rave stones, and whom Elie is identical to.
Voiced by: Yukiji (Japanese); Bob Glouberman (English) Ruby (ルビー, Rubī) is a pink penguin sentinoid who owns a massive floating casino.
As a final test to see if Haru is worthy of being the Rave Master, Shiba challenges him to a battle, reverting to his younger, more powerful self after drinking a special elixir from Alice.
He existed in Resha's memories, having assisted her travel to the future, during which time he went under the alias of Kaim (カーム, Kāmu) and entrusted Evermary to take care of Gale.
Voiced by: Masami Kikuchi (Japanese); Crispin Freeman (English) Sieghart Caesar (ジークハルト・シーザー, Jīkuharuto Shizaa), or simply Seig, is a 27-year-old elemental master and most powerful sorcerer from Mildian.
Obsessed with upholding the time stream, he initially infiltrated Demon Card with the intention of eliminating King, and later attempts to kill Elie in order to erase the threat of Etherion.
Voiced by: Satsuki Yukino (Japanese); Cindy Robinson (English) Cattleya Glory (カトレア・グローリー, Katorea Gurōrī) is Haru's older sister, and the self-proclaimed "Queen of "Karaoke".
He uses the high six star Dark Bring Ballettänzer Zeffrea, which allows him to cause an explosion within a spherical targeting grid that manifests over a chosen point in space; it is later destroyed by Lucia.
Although simple-minded in appearance, usually wearing a bunny eared hat and a loincloth, he is over five hundred years old and 'wields' a giant syringe, containing various fluids, of which switched the souls of Haru, Elie, Musica and Plue around, causing confusion.
He and the rest of the Silver-Rhythm gang occasionally join and help out Haru's group with their state-of-the-art air ship, the "Silver Knights" gained from ill-gotten wealth.
Levin Glory (レビン・グローリー, Rebin Gurōrī) is the future son of Haru and Elie who looks a lot like them, he is featured in the Rave 0077 mini chapters of the manga.
Voiced by: Kousuke Okano (Japanese); Randall Montgomery (English) Nakajima (ナカジマ) is a strange lifeform that lives stuck to the outside wall of Cattleya and Haru's house.
Range (ランジュ, Ranju) and Sopra (ソプラ, Sopura) are two female members of Demon Card and are part of Reina's unit to help fight against the Onigami Forces.
Monster Prison is one of the "reverse" Dark Brings feared for their unchecked power, which seals the bearer's body and soul within it for all eternity, transforming them into a beast with just bestial instincts; in this form, he is immune to pain and can fire energy beams from the mouth.
When he was seen to still be alive, he was imprisoned within the 66th basement of the maximum security desert prison Mega Unit where he became an infamous legend known among the Empire as the Blonde Demon, a boy whose power was so great and terrifying, he was a threat to the entire world.
Golden-eye Brosnan (ブロスナン, Burosunan) who is easily seen as the largest of the four is a large monster like human that is seen wearing a giant suit of knight armor over his body and long golden hair who wields a great sword.
Endless (エンドレス, Endoresu), also known as the King of Star Memory, is a monstrous entity born as the result of the alternate timeline, in which history was reconstructed to ensure the survival of mankind.
Let Dahaka was initially the second most powerful of the Palace Guardians but, after his defeat to Haru, later changes his ways and becomes a central ally and good friend to the Rave Warriors.
His Dark Bring allows him to change into acid and burn enemies who come into contact with him, granting him virtual immunity to physical attacks and also wields a scythe shaped like an anchor for armed combat.
Her Dark Bring allows her to wear anything as an armor, including wind which grants her increased speed and agility, bullets, Julia's fire breath, electricity, and metal (which she considers her strongest form and only uses on people she hates).
Sean Vivera (シアン・ヴィヴェラン, Shian Viveran, "Chien Viverrin"), the first Blue Guardian to be introduced, and a rather fat member who totes a giant club and has bags under his eyes and wears something that resembles a leaf on his head.
His Mother DB Anastasia allows him to "restore" anything, including his missing arm, ruined buildings that had long since been leveled, the atmosphere after Haru tried a smoke screen, and all his opponents old wounds which they have ever suffered and is usually fatal (although it appears he has to touch the subject).
He also carries a sword with a blunted tip since he prefers to slash off heads instead of stabbing people, thus earning the nickname "Executioner".He aims to merge with Endless, to forget the incident of which killed all of his comrades, wife, and unborn child, which made him and his best friend the only survivors.
Realizing what he had done to his own flesh and blood, Hardner broke down in defeat as Haru spares him, only to be stabbed in the back by Lucia to retrieve the mother DB piece in volume 28.
Mummy (マミー, Mamī) is a corrupt scientist with an affinity for werewolves as he created a breed of bipedal wolves with three eyes and machine guns imbued into their right arms.
He holds one of the five mother DB, Vampire, which gives him complete control over the forces of gravity and repulsion which lets him, at the most extreme, pull physical matter into darkness (which he did to Musica).
Onigami (鬼神) is made up of a large amount of onis (similar to demonoids, but more humanlike) led by Ogre, they sided with the Doryu Ghost Attack Squad to pose a threat to the newly reformed Demon Card.