A group started by Rouga Zanma to liberate Seijou Academy from the tyranny of Agito of the Dark.
Rouga Zanma
The main character. An ambitious young man that transfers into Seijou Academy at the start of Big Bang Age, and wishes to conquer all of Japan with his bare fists, defeating the Special Students that have overrun it.
- Playable in: Both games
- Animal Motifs: Wolves. It's in his name (Rouga is written with the characters "wolf" and "fang"), many of his moves have biting wolf energy motifs, and his theme song even opens with a wolf howling.
- Badass Normal: Unlike many of the other people he encounters and recruits, he isn't a Special Student, but he's more than capable of keeping pace with them.
- Blood Knight: Loves to fight as much as he loves to flirt.
- The Casanova: In Big Bang Age, pretty much all of the female characters were attracted to him. It's barely mentioned in BBB and BBBR.
- Chivalrous Pervert: Despite his propensity for flirting and charming women, he won't assault them, and will lay off if they don't like him.
- Dumb Muscle: Freely admits that the only thing he's good as is fighting and not much else.
- Japanese Delinquents: All in his behavior and attitude, though he doesn't sport the classic look, contrasting Ren.
- Meaningful Name: The Wolf Fang Brigade is directly named after him.
- Real Men Wear Pink: His bright pink belt, gloves and boots.
Kunagi Tenrou
Rouga's childhood friend and fiance. As a child she was extremely ill, and her brother Kamui attempted to cure her. In the process, he accidentally unsealed the Demonic Boundary Hole, turning Kunagi into a half-demon and giving her powers she could barely control.
- Playable in: Both games
- Betty and Veronica: Of the two main heroines (herself and Senna), she is the Veronica, being blunter and more anti-social.
- Fragile Speedster: Kunagi's one of the most mobile cast members, with multipe techniques that move her around the battlefield. However, she is extremely fragile and doesn't take damage well.
- Half-Human Hybrid: Thanks to her brother's attempts to cure her, which is what turned her into a half-demon.
- Involuntary Shapeshifting: She lost control of her powers for a short time, and turned into a wolf. Eventually she managed to turn back to normal. Sort of.
- Noble Wolf: Her wolf form is like herself, stoic and blunt with a fondness of cute things.
- No Social Skills: Extremely blunt and not known to mince words.
- Older Than They Look: After she regained her human form, her body was made younger than its chronological age. She can occasionally take on her adult form, but it's not under her control.
- The Stoic: With a soft spot for small, cute things.
- Sugar-and-Ice Personality: She will relax her cold personality slightly for Rouga and for things she finds cute. Not much else.
Senna Kyoudou
An amnesiac girl that Rouga fights one night and quickly makes a part of the Wolf Fang Brigade. She's polite and kindhearted off the battlefield, but dangerous and cold on it.
- Playable in: Both games
- Action Girl: She's easily one of the strongest and most beautiful members of the Wolf Fang Brigade.
- Betty and Veronica: Of the two main heroines (herself and Kunagi), she is the Betty, with a (generally) gentler and more open personality.
- Does This Remind You of Anything?: Her "getting hit" voice clips in the original game are very loud and quite piercing.
- Flash Step: During her Big Bang Break, she disappears, then becomes visible again, slicing the opponent repeatedly while she's gone only for all the slashes to land at once when she reappears and sheathes her sword.
- Iaijutsu Practitioner: She draws and sheathes her sword with every attack that uses it.
- Identity Amnesia: She has no memories of her life prior to meeting Rouga. She eventually gains some of these back, but keeps it secret from him and the rest of the Brigade until Rouga reveals he figured it out already.
- Shout-Out: Maybe. She has a move eerily similar to Vergil's Judgment Cut.
Heita Zinnai
One of the first members of the Wolf Fang Brigade, a young man determined to prove his manliness to class rep Sanae Hibiki. He has a Super Mode known as Super Heita.
- Playable in: Both games
- Cast from Lifespan: His Decade Knuckle. One use eats 10 years of his lifespan. In BBB and BBBR, this is reflected by reducing his HP to One whenever he uses it. BBB's version of Super Heita takes this concept a step further: in that game, Super Heita loses health with every attack he makes, even his normal punches and kicks.
- Dangerous Forbidden Technique: Heita's Big Bang Break, the Decade Knuckle, though he's not aware of it. True to its name, it shaves 10 years off his life every time he uses it. In Big Bang Age, using it seven times causes him to die, which is actually needed for his last star.
- Determinator: No matter how many times he's beaten up or knocked down, he will get up to keep fighting.
- Hot-Blooded: Everything Heita does, he does by shouting at the top of his voice.
- Megaton Punch: His Decade Knuckle attack manifests as this, being strong enough to knock the opponent sky-high.
- Power Dyes Your Hair: As Super Heita, he's blond instead of brunet.
- Shotoclone: Becomes one in BBBR by gaining a fireball technique similar to Dan Hibiki's in addition to his existing uppercut move—the fireball doesn't travel the full screen, and he even throws it like a Hadouken.
- Spell My Name With An S: Due to the nature of the "ji" sound in Japanese, his last name has been translated into romaji as both "Jinnai" (BBB) and "Zinnai" (BBA, BBBR).
Burai Yamamoto
Head of Seijou Academy's Boxing Club and a former enforcer for Agito. He only took up the position to earn money for his sick sister. Joins with Rouga's Wolf Fang Brigade after Agito is defeated.
- Playable in: Both games
- Bare-Fisted Monk: All he fights with is some tape wrap around his hands.
- Cannot Talk to Women: A carryover from Big Bang Age that gets a special intro reference in BBB and BBBR whenever he fights a woman.Burai: [grunts] O-Onna ga aite to wa? ("I'm fighting a girl?")
- Extremity Extremist: Burai, being a boxer, relies solely on punches.
- Megaton Punch: Freedom Punch and Fist of Freedom.
- The Stoic: Aside from his phobias, he rarely emotes, and is calm and unshakable.
- Why Did It Have to Be Snakes?: Girls make Burai nervous. Ghosts make him freak out.
Kendou and Kyuudou Nakanashi
Twin sisters that attend Seijou Academy, and join with Rouga to overthrow Agito.
- Playable in: Both games
- Dual Wielding: Kendou uses two shinai in combat.
- Hot-Blooded: Kendou is highly competitive and hates to lose, a Spirited Competitor to the tee.
- Meaningful Name: Kendou and Kyuudou are named after the fighting styles that they use in battle, swordplay and archery respectively.
- Sibling Yin-Yang: Kendou is brash and hotblooded, while Kyuudou is shy and retiring. Their styles of combat also fit their personalities—Kendou is a close-ranged fighter while Kyuudou prefers archery.
Miyazato Corps (Erika Miyazato and her friends Saki and Shouko)
- Playable in: BBBR
Erika is one of the students that objected to Agito's rule over Seijou Academy. She got jealous of the support Rouga was getting and challenged him to a fight to see who would fight Agito. Rouga defeated her, and all three girls (unwillingly) joined up with the Wolf Fang Brigade.
- Assist Character: Saki and Shouko are treated like this, while Erika is the only character that remains under player control.
- Hot-Blooded: Erika is prideful, hates to lose, and challenges her opponents with a loud, rowdy voice.
- Unknown Rival: To Rouga, before she joined up with him.
- Variable-Length Chain: With barbs and spikes attached. She uses it for long range and ensnarement attacks.
Kinako Tsukuyomi
- Playable in: BBBR
The president of Seijou Academy's Occult Research Society. She joins Rouga when approached during the events of Big Bang Age, but only if Burai Yamamoto isn't a member of the team.
- Cloud Cuckoolander: She's rather airheaded and out of touch with reality.
- Consulting Mister Puppet: That devil plushie she carries may or may not be alive. Either way, she calls it "Grimoire-chan" and talks to it a bit too often.
- Creepy Child: As a result of Consulting Mister Puppet above. She also likes to summon spirits.
- Token Mini-Moe: She's even younger-looking than Kunagi is.
Agito of the Dark (Agito Yamazaki)
The former gang leader of Seijou Academy. A sadistic, monstrous asshole who was defeated and overthrown through the efforts of Rouga and the Wolf Fang Brigade.
- Playable in: Both games
- Axe-Crazy: He enjoys spilling blood and lording his power over the students of Seijou Academy.
- Names to Run Away from Really Fast: Agito of the Dark.
- Politically Incorrect Villain: Back in Big Bang Age, he'd sexually assault women whenever he got the chance. He's less predatory but no less violent and crass in BBB and BBBR.
Daigo Hotta
An ambitious, fiery Special Student from the Steel School. He has a crush on Sanzou Kongoumaru's younger sister Aya and will go to any lengths to impress her.
- Playable in: Both games
- Fiery Redhead: He loves to fight and often talks about how he's burning in his winquotes.
- Hot-Blooded: Passionate to an extreme.
- Theme Naming: A lot of his moves have the word "Dragon" in them.
Sanzou Kongoumaru
The leader of Sensouji Academy, known as "The Iron Wall of Kongoumaru". Has a soft spot for his younger sister Aya, and does not approve of Daigo's crush on her.
- Playable in: Both games
- Gentle Giant: His personality in a nutshell, though he is stern enough not to take any challenges lying down.
- Mighty Glacier: In BBA, he had zero evasion, but the most HP of any character. Combined with an 80% counter rating, no matter what you hit him with, he was guaranteed to take it and keep going.
- Walking Shirtless Scene: Completely topless except for his belt....which has a TELEPHONE as the centerpiece; his sister built him the telephone belt to compensate for his massive size.
Ren Idagawa
The leader of 750 School, and the head of the largest biker gang in Kanto, the Gokuren. He is Rouga's primary rival, since he shares Rouga's interest of conquering the nation.
- Playable in: Both games
- Badass Biker: In Big Bang Age, there was a sidequest built around him challenging Japan's other big-name bikers to drag races.
- Combat Pragmatist: Utilizes concrete blocks, molotovs and even soda cans into his moveset.
- Cool Shades: Sports a pair of black sunglasses.
- Japanese Delinquents: Of the rougher, biker kind, complete with a long coat and wooden sword.
- Please Kill Me if It Satisfies You: A former member of the Gokuren, Kyouko Senpuuji, hates Ren for getting her husband killed riding with the Gokuren. Ren's guilt over it is enough for him to let Kyouko kill him without fighting back. In Big Bang Age, Kyouko will kill him if you recruit her and find him, will not join you if you have him, and will kill him if he is recruited and is stationed anywhere she appears.
- Use Your Head: Has a headbutt as a regular throw and a close-range super move. The latter can be charged up for extra oomph.
- Wooden Katanas Are Even Better: Uses a hardwood bokutou to attack with and to hit his projectiles farther.
Devil Daigo
- Playable in: Both games
- Large Ham: His winquotes are appropriately grandiose and overblown.
- Superpowered Evil Side: For regular Daigo. Well, sort of—it's more like a Superpowered Perverted Side.
Kamui Tenrou
The Final Boss of BBBR. He is Kunagi's older brother, who was corrupted and driven insane by the powers within the Demonic Boundary Hole that he accidentally unsealed when he attempted to find a cure for Kunagi's sickness. Rouga's older brother, Gou, as well as Yukina, Senna's predecessor, defeated and killed him, but the Chaos within the Boundary Hole possessed his body and used it for its own purposes.
- Playable in: BBBR
- Half-Human Hybrid: Opening the Demonic Boundary Hole turned him into a demon hybrid like it did Kunagi.
- Literal Split Personality: It is not observed in BBB and BBBR, but the evil possessing Kamui occasionally loses its grip on him, allowing him to assert his will. When the Chaos' control over Kamui lapsed, he made sure that Senna made it to the Wolf Fang Brigade and sealed her memories, while the Chaos in control of Kamui's body is the one that distributed the MacGuffins that created the "Special Students", and is faced as the final boss.
- Shock and Awe: His attacks are lightning themed.
- Shout-Out: Several of his attack animations are taken frame for frame from Setsuna.
- SNK Boss: He moves incredibly fast, hits very hard, and doesn't have a crouch animation. He can be extremely frustrating to face off against.
Hanny
Alicesoft's Mascot character, encountered as an enemy in many Alicesoft games. The race as a whole is called Haniwa, based off of Japanese clay dolls, and Kunagi finds them cute.
- Playable in: Both games
- Lethal Joke Character: At first glance, Hanny isn't that great a character, and physically speaking he is still miles behind the rest of the cast. However, he can do a significant amount of damage with proper use of specials and his weapon switching style. Additionally, unlike Manbou, Hanny's hitbox is rather small, making him difficult to hit.
- One-Gender Race: Averted. Female Haniwa are visible on the Haniwa Island stage.
- Path of Inspiration: Big Bang Age has a cult built around the Haniwa. If you made the mistake of joining them, although you could freely recruit powerful Haniwa units, you would have to attend their ceremonies regularly - or they would kill you.
- Stance System: Can switch between a short-ranged sword style and a long-ranged wand style.
Manbou (Sunfish)
A generic enemy encountered in Big Bang Age.
- Playable in: Both games
- Joke Character: Manbou is weak and generally powerless, and doesn't have as many tricks as Hanny does.