- Animal Motifs:
- The animal of the Red dorm is a fox, which represents a majestic and subtle cunning.
- The symbol for the Blue dorm is an owl, which represents wisdom and knowledge.
- The animal of the Violet dorm is a wolf since all members of the Violet dorm are seen as weird and eccentric outcasts.
- The symbol of the Green dorm is a lion, which seems to represent strength and victory as all members of the Green dorm are excellent athletes.
- Flower Motifs: Each dorm is represented by a flower. Red roses for Scarlet Fox, blue gentian for Sapphire Owl, purple dahlia for Violet Wolf, and leaves of the holly tree for Green Lion.
- One-Gender School: Weston College is a male-exclusive academy.
- Absurdly Powerful Student Council: The P4 are the representatives of the students' houses, and hold the highest authority after the principal and vice-principal.
- Appeal to Tradition: Their top priority is preserving the noble traditions of Weston College. They were willing to commit multiple murder for it.
- Boy Band: After they're expelled from Weston, they're next seen working as singers and dancers at the Sphere Music Hall.
- Broken Pedestal: Their fags are horrified when the prefects they looked up to confess to having committed multiple murder to stop the bully Derrick from becoming a prefect. Hearing the truth robs them of the satisfaction of enjoying the same privileges their predecessors once had.
- Colourful Theme Naming:
- Edgar Redmond's last name refers to the color of the Scarlet Fox dorm.
- Lawrence Bluer's last name refers to the color of the Sapphire Owl dorm.
- Gregory Violet's last name is the color of the Violet Wolf dorm.
- Herman Greenhill's last name refers to the color of the Green Lion dorm.
- Deal with the Devil: They make a contract with Undertaker to resurrect the murdered students and Vice-Principal to cover up Greenhill's crimes and protect the school. In return, Undertaker gets to fool around as its Principal.
- Fate Worse than Death: The four prefects are expelled for their actions. Considering their loyalty to Weston, this is a big deal.
- I Did What I Had to Do: They try to justify their murder of Derrick, the vice-principal, and Derrick's fellow bullies as something they had to do to protect the good traditions and honor of Weston College. Even so, the Earl thinks they went too far.
- Sympathetic Murderer: Redmond, Bluer, and Greenhill cooperated in Herman's murder of the student Derrick Arden, the vice-principal, and all the witnesses because they discovered Derrick was a vile bully whose academic accomplishments were all stolen from better students and the vice-principal let him get away with it due to Derrick bribing him. Since none of the prefects wanted the honour and tradition of the academy to be stained, they murdered the two assholes. Considering everything, the prefects come off as the more sympathetic party in the crime.
- True Companions: All of the P4 is revealed to be this, to the point of covering up multiple murders. If one of them goes down, they all go down together.
- Unwitting Pawn: They have no idea that their job as a Boy Band at Sphere Music Hall was part of a plan to extract blood from as many people in London as possible to sustain Undertaker's advanced Bizarre Dolls.
- Well-Intentioned Extremist: The prefects were willing to do anything, including multiple-murder, to protect the school.
Prefect of the Scarlet Fox Dorm.
- The Beautiful Elite: His house's secondary theme. Obviously those with Blue Blood must be beautiful.
- Bishōnen: He is the nephew of Aleister Chamber after all. Like his uncle, he seems to be very well aware of his good looks and is just as flamboyant.
- The Casanova: He seems to be very popular with the ladies, including a few of Lawrence's sisters. He also mentions that he does not want a fixed partner, implying his play-boy ways.
- Disappointed in You: His reaction to Maurice Cole's Engineered Public Confession.
- Hair of Gold, Heart of Gold: He's blond, and he's quite nice. However, he still participated in a multiple murder.
- Horrible Judge of Character: And he's aware of it. "I'm ashamed of my inability to judge people."
- He evidently didn't think too much about how Maurice Cole could have possibly done the work that he did in so little time, and with such soft hands.
- And before him, there was Derrick Arden, essentially another Maurice Cole with that Bitch in Sheep's Clothing act cranked Up to Eleven, who doesn't stop at stealing other students' works but also traumatizes them with bullying.
- It Runs in the Family: Ciel has seen those gold locks, gold eyelashes and Ambiguously Bi Casanova act somewhere... Oh wait a minute, he's Viscount Druitt's nephew!?
- Long-Haired Pretty Boy: He's a beautiful man with long platinum blond hair falling over his shoulder.
- Nice Guy: The friendliest of the prefects.
- The Proud Elite: His entire house's theme.
- Red Eyes, Take Warning: Averted. While he does have red eyes, it's only to identify himself as a member of the Scarlet Fox dorm, and he's the most nicest guy in the school.
- Sherlock Scan: No one but him noticed that the poem was written in blue ink in some part, thereby enabling him alone to break the code.
- Smarter Than You Look: Aside noticing the parts written in blue ink, he was acknowledged enough to decode a hidden message written inside a poem.
- Something About a Rose: He's often depicted holding a red rose that is his house's symbol.
- Taking the Heat: He offers to do this so Greenhill can be protected from going to jail for multiple murder after killing Derrick Arden, the Vice-Principal, and several other students.
Prefect of the Sapphire Owl Dorm.
- Cry Cute: After becoming a prefect, Lawrence steps foot in the Swan Gazebo's lawn for the first time and is so overwhelmed that he cries out of sheer joy.
- Determined Defeatist: Sapphire Owl had lost so many cricket tournaments in the past that Bluer became convinced that studying is all he and his students are good at. Thanks to Ciel, though, he decided to take another shot at winning anyway.
- Do Not Call Me "Paul": He dislikes being called by his first name, Lawrence, because it's against the rules. Since it's not an official rule though, the others, especially Redmond, do it anyway.
- Nerd Glasses: Poor eyesight seems to be a stereotypical trait of the Sapphire Owl (which is considered the House of Intelligence, so to speak)
- Nerds Are Virgins: When Redmond jokes about the number of women that hang around Bluer, Bluer reveals that his "women" are actually his seven sisters, and he is the only man in the family. Almost everyone is mortified to hear this.
- Outnumbered Sibling: He has seven sisters; three older and four younger ones; he's the only son in his family.
- Peek-a-Bangs: He usually covers his right eye with his hair.
- Principles Zealot: Out of the P4, he follows the rules more closely and faithfully.
- Scary Shiny Glasses: Bluer gets these a couple of times in the manga, most notably when he makes an astounding bowl against Greenhill in the cricket match, and later when he and the other prefects confess to murdering Derrick Arden to protect the integrity of their school when they discovered that he was bulling other students and using their talents to make himself appear perfect- and the vice principal was not only aware, but allowing it.
- The Smart Guy: He's the most intelligent and studious of the P4.
- You Gotta Have Blue Hair: His hair appears to be a gray-blue color.
Prefect of Violet Wolf Dorm.
- Bizarre Taste in Food: He mixes a drink composed of several random cocktails.
- Black Cloak: He's covered with the cloak of the Violet Fox uniform, giving him a mysterious look.
- Broken Pedestal: Cheslock's expression when he learns his prefect of the Violet Fox dorm committed multiple murder.
- Cloudcuckoolander: During the cricket tournament he drew the house crest of the Violet Fox dorm on the entire playing field.
- Dark Is Evil: Aside from a very sinister appearance and liberally using satanic imagery in a manga where demons are very real, all the missing students were last seen in the Violet Fox Dorm. However, the "evil" part is very downplayed because while did to participate in a multiple murder and its cover up, the victims were all assholes involved in cruel bullying and cheating. Gregory is far from evil otherwise.
- Deadpan Snarker: Has shades of this.
- Distressed Dude: During the Blue Cult arc, on multiple levels. The readers first find him being drained of all his blood by a desperate Bravat, on the edge of death. Then we learn he's been aware of Bravat's actions all along, but for some reason unable to directly act against him- the only way he could fight back was by inviting his friends in the hopes that one of them would contact Ciel.
- Drink-Based Characterization: Gregory mixes a dozen random cocktails together and drinks them all. Says a lot about the guy.
- Eerie Pale-Skinned Brunette: He has black hair and ghostly pale skin, making him stand out as the most suspicious-looking of the prefects and head of the dorm known for housing eccentrics.
- Eccentric Artist: Out of the prefects, he's the most odd to say the least. In one instance, he drew a creepy drawing of Ciel about to be attacked by the Jabberwocky.
- Goth: He's an Eerie Pale-Skinned Brunette who wears a Black Cloak, puts on black make-up, and is one big oddball with a very reclusive behavior.
- Guyliner: He wears black eye shadow.
- He's Dead, Jim: After Greenhill clubs Derrick in the head, Violet puts a hand over the boy's mouth and notices that he's not breathing.
- Hypocrite: Calls Ciel "weird" for working like a butler despite his Earl status, while he makes a drink by mixing several cocktails and blowing bubbles into it.
- In the Hood: This also applies to all the students living in Violet Fox, as it is actually required to wear a cloak.
- Loners Are Freaks: He and the Violet Fox students are viewed as this by the other dorms.
- No Social Skills: Well, he spends so much time drawing that he (and all of the Violet Fox students) had no time to develop his social skills, not that he wanted to. Though he is on fairly good terms with the other P4.
- The Quiet One: He's the least talkative of the P4.
- Reclusive Artist: In-universe example. He'd rather draw and paint than socialize, and dislikes his job as a prefect because it prevents him from focusing on his art.
- Skunk Stripe: He has black hair with a white stripe on the right side of his bangs.
- Troll: Demands that Greenhill strike a very complicated pose, then draws everything but Greenhill. When Greenhill finally loses patience and relaxes, Gregory laments that he ruined his masterpiece.
Prefect of the Green Lion Dorm.
- Batter Up!: Greenhill used a cricket bat to kill Derrick Arden to protect Weston High's traditions from being sullied, along with the Vice-Principal for ignoring Derrick's behavior. He also murdered Derrick's friends to remove any witnesses this way.
- Berserker Tears: While murdering Derrick Arden, he starts shedding tears out of sheer rage.
- Big Damn Heroes: With Edward in chapter 71. Dude beats up four Mooks holding Ciel without harming so much as a hair on the kid.
- The Big Guy: He's the strongest, most athletic, and physically the largest of the P4.
- Bully Hunter: The only times he gets violent is when stopping bullying. It's taken to a dark extreme with later reveals. When the P4 found out Derrick was a bully and had bribed the vice-principal to escape punishment, Greenhill killed Derrick and all his accomplices.
- Carry a Big Stick: He's often seen carrying around a cricket bat on his shoulder. Turns out he used it to murder Derrick Arden, the Vice-Principal, and several other students to protect Weston High.
- Distracted by the Sexy: While playing cricket, he's more distracted by Lau's scantily-clad women (displaying their bare legs, the Victorian equivalent of naked breasts) then any other player.
- Improvised Weapon: Greenhill's cricket bat, which he used to commit multiple murder in order to protect Weston High.
- Laser-Guided Karma: Derrick, one of his murder victims, bites him on his right arm causing injuries. He probably can't do sports anymore.
- Leave No Witnesses: Herman clubbed Derrick Arden to death in a rage for dishonoring Weston High's tradition and also murdered Vice-Principal Agares for being in league with Arden. He also murdered Derrick's friends to remove any witnesses to the crime.
- Lovable Jock: He's one of the best sportsman in the school, but that does not make him a jerk.
- My God, What Have I Done?: His response to killing Derrick, several other students, and the Vice-Principal.
- Serious Business: Almost everything he does.
- Shaming the Mob: During the cricket tournament, the crowd accuses Ciel and the Sapphire Owl dorm of poor sportsmanship. Greenhill rightly calls them out on their bullshit and defends Ciel's actions on the basis that aiming for someone's face requires a lot of practice and the use of such underhanded tactics is a sign that Bluer and his students are very serious about winning the cricket tournament this year.
- Unstoppable Rage: After learning that Derrick was a sadistic bully who bribed the Vice-Principal and realizing that his becoming a prefect would ruin Weston High's reputation, Greenhill simply snaps and proceeds to murder both Derrick and the Vice-Principal in cold blood. When he calms down, however, he realizes the gravity of what he just did and freaks out.
- You Wouldn't Like Me When I'm Angry: Derrick Arden and Vice-Principal Agares learned it the hard way.
Scarlet Fox Dorm
Redmond's fag. He's a manipulative, sneaky, and incredibly vain man that enjoys bullying others. He tricked Ciel, who he saw a rival for Redmond's attention, and received punishment for his bullying and cheating after Ciel was able to find evidence of it.
- Alpha Bitch: A rare male example. He's considered the most beautiful boy in the academy and is popular for being the perfect fag to Redmond, but he's a Bitch in Sheep's Clothing who sabotages any student who attract the positive attention of the P4 and bribes others into doing his fag duties for him. When Ciel exposes his lies, Maurice tries to keep him quiet by attempting to take humiliating pictures of him, but Ciel anticipated this and had the P4 hear their entire conversation.
- Ambiguously Gay: He was really happy when Redmond offered him to sleep in his room after Soma trashed the bedrooms, and he is obviously dissapointed when Soma prevents it. He is really jealous when Redmond shows interest in other people. And when Ciel uses Lau's girls to distract Green Lion, Cole's reaction is complain about how he can't understand why the other students are "going gaga" for them. While biting a handkerchief.
- Beauty Is Bad: He's known as the most beautiful and handsomest student in Weston High. He's also a manipulative, power-hungry bully.
- Bishōnen: Subverted. He's actually a Gonk who happens to be good at make-up.
- Bitch in Sheep's Clothing: Keeps a nice/dependable front around the prefects, but is actually an Alpha Bitch
- Break the Haughty: After his true nature is exposed to the prefects, Redmond fires him, thus ending his prestige at school. Then Ciel spreads around pictures of his true face.
- Chain of Deals: How he got his many followers.
- Consummate Liar: Ciel points out how Maurice lies as easily as breathing.
- Crazy Jealous Guy: Most of his lies and schemes are to keep Redmond's attention on only him by ruining the reputation of any student Redmond might take a liking to.
- Engineered Public Confession: Ciel makes a trap so the P4 hear his confrontation with Maurice where he pushes the latter into revealing his true colors via a variation of Tin-Can Telephone.
- Evil Chancellor: To Redmond. Though less The Starscream and more of the backstab-any-potential-rival kind.
- Freudian Excuse: He can't inherit his father's title, and so is grabbing for power in whatever sphere he can reach.
- Gonk: What he looks like without his makeup on.
- Harsher in Hindsight: He told Ciel that he considers him a winner already, being a firstborn, and thus has no idea what it feels like to be like Cole: the youngest child who would never be able to inherit a title. Later, we find out he does know.
- Hate Sink: He's a petty and lying Bitch in Sheep's Clothing who sets up other students to look bad in front of P4 so he can be the perfect fag in the eyes of the prefects.
- Make-Up Is Evil: Turns out he's as good with makeup as he is at manipulating his classmates.
- Regal Ringlets: Male example. His hair is styled into golden ringlets and he's part of the house for beautiful, upper-class students.
- Screw the Rules, I'm Beautiful!: His reasoning for being a cheating, manipulative bully.
A second-year student of the Scarlet Fox Dorm, who later replaced Maurice Cole as Redmond's fag.
- Because You Were Nice to Me: He states he's willing to help Sebastian because Sebastian helped prove his innocence.
- Bishōnen: He's so pretty with that feminine face and big eyes that anyone would think he's a girl at first glance.
- Bring My Brown Pants: He wet his pants while escaping the zombies at the midnight tea party.
- Butt-Monkey: Where to start? In his first appearance, he's been a victim of Maurice Cole's trickery, and is therefore a social pariah. When Cole is exposed, Harcourt becomes Redmond's new fag and all starts to get better... but it doesn't last. In the cricket game he's grossly humiliated because of Ciel's trick. Later, he discovers that the prefects killed several students and the Vice Principal, meets face to face with the Bizarre Dolls, is almost killed by them, and then has to become a Secret Keeper. The poor guy can't catch a break.
- Gender-Blender Name: Joanne is a girl's name.
- Hair of Gold, Heart of Gold: He has silver-blonde hair and he's a gentle and harmless young boy.
- Heroic Self-Deprecation: He claims that he's only good at reading and nothing else.
- Peek-a-Bangs: His side bangs cover his right eye.
- Potty Emergency: Joanne, Redmond's toy had...ahem...quite the troubles to leave the cricket field after eating meat pie filled with super strong laxatives.
- Prone to Tears: He easily bursts into tears when reminded of the pitiful state he is in due to the misunderstanding of other students.
- Red Eyes, Take Warning: Averted. Like Redmond, the eyes are only to show that he's a part of the Scarlet Fox dorm. And he happens to be a very kind person.
- Secret Keeper: Becomes this to prevent a scandal if he were to reveal the true deaths of the missing students and Vice-Principal and their fates.
- Shrinking Violet: He's very timid and has low self-esteem.
The son of Queen Victoria's cousin and a fifth-year student at Weston College.
- Alpha Bitch: He was basically The Ace of Weston High and the favorite of the prefects, but in reality he was a cruel bully who stole other students' works to make himself look good. So when the P4 found out, he managed to bribe the Vice-Principal and get a lighter punishment. However, once he makes a remark he would become the next member of the P4, this prompts Greenhill to kill him to protect the traditions of the school.
- Bitch in Sheep's Clothing: He made himself look as a well-behaved and likable student in front of the P4, but the truth was he was a cheating bullying even worse than Maurice.
- Broken Ace: Derrick was a bright and talented student; he was the captain of his cricket team, a master embroider, always got high marks, and wrote beautiful poetry. He was well-loved by the students, teachers, and the P4. However, that was just an act to make himself look good and get rid of his family's pressure. He's really a horrible bully who forces other students to do the work for him.
- Broken Pedestal: Edgar was absolutely devastated to find that his fag Derrick was bullying several students and stealing their work to maintain his popularity with the school.
- The Bully: An even worse one than Maurice Cole.
- Dead All Along: Derrick Arden was killed by the P4. He's been resurrected, albeit imperfectly.
- Dies Wide Open: After being clubbed in the head by Greenhill, he died with his eyes open.
- Hate Sink: He's even more hateable than Maurice.
- Karmic Death: He and his friends bullied many other students to steal their work and make himself shine before the P4. He showed no signs of remorse when the P4 found out about this, since he'd bought off the Vice-Principal, and was finally murdered by Greenhill. Even though the P4 was expelled for their crimes, no one shed a tear for Derrick's death.
- Man Bites Man: He bites Greenhill in the arm shortly after appearing as a Bizarre Doll raised by Undertaker.
- Missing Child: His disappearance is what sets off the Weston High arc where Ciel is asked by the queen to find out the whereabouts of Derrick and other students who have suddenly stopped sending letters to their families and haven't returned home for about a year.
- Our Zombies Are Different: Raised by Undertaker. He came back as a Bizarre Doll.
- Screw the Rules, I Have Connections!: He has a distant family relation to the Queen, and this makes him think that he's entitled to commit despicable acts as he pleases in school. This eventually got him killed by Greenhill after a sly remark he would be a prefect in the next school year.
- Stealing the Credit: He stole his "talents" to maintain this reputation, along with bullying the other students and bribing the Vice-Principal to overlook their behavior for four years. When Greenhill realized that his becoming prefect would allow Derrick to abuse that power, sullying the school's reputation, he murdered him.
Sapphire Owl Dorm
Bluer's fag. Although he is condescending and slightly devious, he is dutiful to his fag responsibilities, and grants praise to those who deserves it.
- Blind Without 'Em: Without his glasses he can barely read a folder inches from his face.
- Meal Ticket: For Ciel to get into the P4's good graces.
- The Glasses Gotta Go: Apparently, he's really good looking without his glasses, handsome enough to be a part of an Idol Singer group, in fact.
- Nerd Glasses: He's a member of the intellectual Sapphier Owl dorm, and wears glasses.
- Secret Keeper: Becomes this to prevent a scandal if he were to reveal the true deaths of the missing students and Vice-Principal and their fates.
- Small Name, Big Ego
- You Are in Command Now: After Bluer's expulsion, Clayton replaced him as prefect of the Sapphire Owl Dorm.
A kind and friendly first-year student in the Sapphire Owl Dorm and the first person to befriend Ciel. He acts like an informant to Ciel about the school's activities and its students.
- Cheerful Child
- Children Are Innocent: The only character who ends the Weston College Arc with his innocence intact.
- Fanboy: He acts like one when he discovers that Ciel's dad was responsible for the "Blue Miracle". He is also this to the P4, even gushing over the newly elected prefects after the previous ones are expelled for multiple-murder.
- Meganekko: Rare male version.
- Nice Guy: He's friendly with Ciel all along and helps him to expose Maurice Cole.
- The Short Guy with Glasses: He's as tall as Ciel, and he's a student of the Sapphire Owl dorm.
- Youthful Freckles
Violet Wolf Dorm
Violet's fag. Cheslock is a musical genius who can play any instrument instantly, and he looks down on students in the other dormitories.
- Delinquent Hair: Sports a mohawk of the "deathhawk" variety
- Disproportionate Retribution: Tries to stone Ciel for daring set foot on Violet Wolf grounds.
- Good Scars, Evil Scars: He has a long scar that runs from his left eye to his jawbone.
- Guyliner: He wears eye makeup.
- Hidden Depths: He is a master at playing multiple music instruments, such as the violin, piano, zithers, and bagpipes. His "magic fingers" are why he's so good at cricket.
- Punk Rock: Several decades ahead of his time, which gets Lampshaded later.
- Secret Keeper: Cheslock became this to prevent a scandal if he were to reveal the true deaths of the missing students and Vice-Principal and their fates.
- Serious Business: Hates outsiders to the school, and hates all students not in Violet Wolf.
- You Are in Command Now: After Violet's expulsion, Cheslock replaced him as prefect of the Violet Wolf Dorm.
The vice headmaster of Weston College.
- The Alcoholic: Implied. Derrick Arden bribed him with a whiskey bottle.
- Dead All Along: Johan Agares was killed by the P4. He's been resurrected, albeit imperfectly.
- Karmic Death: He continuously took bribes from Derrick and in return he overlooked his horrendous behavior for four years. When the P4 caught Derrick and his friends bullying other students, Agares instead punishes Derrick and his friends for being out late at night only rather than the abusive way Derrick and his friends did. After only sly remark from Derrick boasting to be the next P4 member, worried about the tradition and safety of the school unchecked if this continues, Greenhill snaps and murdered Derrick while the rest of the P4 restrain him and Derrick's friends, locking the room, to be killed by Greenhill.
- The Klutz: Never fails to fall off a staircase. This is in fact foreshadowing to the reveal that he's a Bizarre Doll that's still imperfect and that's why he doesn't have good control over his body.
- Made of Iron: He shrugs off falling down a staircase.
- Names to Run Away from Really Fast: Agares is the name of a demon from the Ars Goetia.
- No One Could Survive That!: He falls down a staircase several times and always gets up completely unharmed. Justified because he was already dead to begin with.
- Our Zombies Are Different: Undertaker's experiments have created a new type. These zombies can function as people, provided that they have enough "episodes" (their own projections of their futures). Agares had enough episodes to function as a normal human being, at least for awhile.
- Sadist Teacher: Implied. He was hidden in the classroom where Derrick Arden was torturing two guys, despite he didn't have any motives to be there. Perhaps he was enjoying the show since he was bribed with the booze that Derrick 'confiscated' from the students.