Dark Student Council
- Absurdly Powerful Student Council: Well, they're called a student council, even if they don't really seem to fit the strict definition of one.
- For example, one member is a shark. A really big, talking shark.
- Utopia Justifies the Means: They plan to put Japan back on top as a world-class powerhouse nation...by completely destroying it and reworking it from the ground up.
Gamu Kishiri
- Humanoid Abomination: Has mouths for hands.
- Light Is Not Good: Wears white, but is obviously evil.
Masaki Hoshikari
Click here to see his true appearance
- Gratuitous English: Half of Jiryoku Bancho's dialogue consists of near-nonsensical Engrish.
- Healing Factor: Looks like this but it is really adding metal to his armor.
- Living Shadow: Looks like one, but it's actually an armor of iron dust that is covering him..
Tsuchiua Mahori
- Big Damn Heroes: Saves Yuu's siblings by digging a hole under Gedou Bancho's explosions.
- Even Evil Has Standards: Decides not to attack Yuu when he's unconscious.
- Noble Demon: Saves his ally, protects Yuu's siblings, and does not attack Yuu when he's unconscious. He's a pretty decent guy.
Hanzo Aniwa
- Evil Gloating: Does this over the Bancho Alliance, even though they can't hear him, since he put them all to sleep with his sound waves.
- Large Ham/ No Indoor Voice: Ironic in that he emits sound waves that are supposed to be undetectable.
- Make Me Wanna Shout: Utilizes whistling to put victims to sleep and his Death Butterfly's Requiem combines this with Having a Blast.
- Non-Standard Character Design: Has bigger and creepier eyes than most of the characters in the series.
- Taking You with Me: Attempts this on Takeshi. Not only doesn't it work, but it shows a Kick the Dog moment when Takeshi smirks at his death, meaning You Have Outlived Your Usefulness.
Shidou and Shirou
- Calling Your Attacks: Hyaku Raimei Dousen (Hundred Rumbling Thunder Flashes) and Gouraku Dankaisyou (Mighty Landslide).
- Eyes Always Shut: Except when the shield brother reveals himself to be a jerk.
- Kick the Dog: They kick their unconscious allies and strike Sasori Bancho from behind.
- Lack of Empathy: Kicking their unconscious allies out of the way after they've lost.
Meiko Orenji/Kaizou Bancho
- All of the Other Reindeer: Meiko is a brilliant mechanical scientist despite her very young age. However, her genius made other kids reject her.
Unabara Bancho
- Attack of the 50-Foot Whatever: He's a ridiculously large shark. He's said to be a Megalodon who survived into present times.
- Quirky Mini Boss Squad: Makajiki (Marlin/Swordfish)
◊, a yes-man marlin that attacks for him.
Four Dark Emperors
Kenji Isaki/Kenpei Bancho
- Ax-Crazy: Has a sword that can kill you in four ways at once.
- Blood Knight: Wants to have his sword sing in battle, does not like weak opponents.
- Combat Pragmatist: Has a belt blade in case his other blade proves useless.
- Cool Sword: Canaria, a sword designed to not only cut but also to smash, gouge, piece, and saw a person's body.
- Fugutaiten (cannot allow the sworn enemy to live in this world): Kenpei Banchou brings out his secret sword, his true master weapon—an extremely flexible and long blade that is wrapped around his arm like a belt. It is very thin and extremely sharp. Thanks to its lightness and length it can even cut skyscrapers apart.
- In Love with Your Carnage: Claims that he shares Bungaku Bancho's affection for Takeshi, but mostly just seems to really like it when Takeshi gets angry. Presumably because Takeshi getting angry means that a lot of stuff is going to get busted and a lot of people are going to get hurt.
- Psycho for Hire: Joins the Dark Student Council just so he can kill people.
- The Sociopath: He designed his sword Canaria to do as many different types of damage as possible just to cause his targets more pain.
Shiori Kamitsu
- Artistic License – History: Tarzan was not in The Jungle Book, and Alberich's appearance is much closer to Siegfried than a dwarf.
- Evil Genius: Being extremely sharp-minded, talented, strong, and perceptive she is the perfect person for coordinating all of Nippon Banchou's plans.
- Gender Bender: Often the transformations are male, especially Takeshi.
- Informed Ability: Set up to appear much more dangerous than her allies, but it's only when she turns into Takeshi that she even stands a chance against Akira.
- Our Demons Are Different: Turns into Baphomet from the Divine Comedy, only to be curb-stomped immediately.
- Shapeshifting: Due to her Omega Placebo, the ability based on genetically restructering her body through stimulation of her imagination into what she imagines.
- Small Name, Big Ego: Despite her confidence, Akira easily puts down her transformations till she turned into Takeshi.
- Yandere: Has a mad obsession with Takeshi, even turning into him at the finale of her fight with Akira.
Mudou Gou
- Evil Gloating: Gloats about how he killed Yuu's family and how he killed Medicine Bancho's family in six hours.
- Kick the Dog: Poisons Yuu's siblings and causes their home to explode with them in it.
- Knight of Cerebus: While the show is mostly light-hearted Shōnen, his tactics are monstrous by this show's standards.
- Master of Disguise: Combined With Shapeshifter Guilt Trip when he disguises himself as Yuu and then does horrible things to them.
- The Sociopath: A very low-functioning example-he has no empathy for others and lives to cause suffering.
Ryuusenji Kounosuke
- From Nobody to Nightmare: Once was a lab researcher till he came up with a way to create Bancho using the Kongoh as a basis. He also made himself into a large Bancho capable of briefly fighting against Akira.
- Pyrrhic Victory: gives Akira the same injection that made Takeshi stronger as a last kick to the pants.
- Walking Spoiler: He's the creator of the Banchos' powers.
Eco Bancho, Nourinsusan Bancho and Gekikotsu Bancho
- Kick the Dog: Destroys precious memorials in the reconstruction of Japan.
Goumon and Juujika Bancho
- Reptiles Are Abhorrent: Juujika Bancho uses what looks a like an oversized piece of thorny briar. It's actually a Thorn Boa.
- Hypocrite: Any follower of Christianity would chide Juujika for associating himself with a snake.
