- All for Nothing: They believed they were protecting the Renbon Workhouse by carrying out child kidnappings for Kelvin. After all the first-tier members of the circus die because of it, Ciel and Sebastian find the Renbon Workhouse abandoned. They assume Kelvin allowed Doctor to kill the children for his experiments with Artificial Limbs. Joker and the rest died for nothing.
- Anti Villains: The first-string circus members, minus Snake, kidnapped children and killed anyone who got in their way on Baron Kelvin's orders, but certainly did not take pleasure in doing so.
- Dark and Troubled Past: All of the first-string circus members, minus Snake, were originally Street Urchins, abandoned by society because of their cripplings and disfigurements. Baron Kelvin found them and took them in, giving them a better life. Everything was going well until Baron Kelvin went insane over Ciel and started forcing the circus members to kidnap children.
- Facial Markings: The first-string circus members have them as part of their makeover.
- Forced into Evil: Their "father" forced them to kidnap children and kill any witnesses. Joker and the others clearly hated to do it, but Kelvin used the children at the Renbon Workhouse as bribe to make them continue. If only had they known the Renbon Workhouse and the children there were long gone...
- I Owe You My Life: Baron Kelvin saved the first-string circus members from a miserable life in the streets, which is why they obey him without hesitation. Deconstructed by all the horrible things Kelvin makes them do to repay him.
- Only Known by Their Nickname: The circus crew only go by their Stage Names, even when out of a performance. Their real names are never revealed, with exception of Beast in the anime.
- Parental Abandonment: All the first-tier members either were abandoned by their parents because of their impairments or never had them to begin with.
- Powered by a Forsaken Child: Literally. Unbeknownst to all but the Doctor, their high-quality prostheses are made from the bones of children.
Voiced by: Ayahi Takagaki (JP), Mikaela Krantz (EN)
Live actor: Ginga Shitara (Musical)
A girl who ends up as Ciel's roommate during his time at the circus.
- The Baby of the Bunch: She's the youngest of the first-tier circus members and her friends, especially Joker, treat her as their little sister.
- Berserker Tears: She cries out of grief and rage when she tries to attack Ciel and Sebastian.
- Boyish Short Hair: She has short hair that fits her tomboyish personality.
- Break the Cutie: When Ciel tells her that he killed the rest of the circus crew, Doll completely breaks down and loses herself in a murderous rage. She then made the mistake of trying to attack Ciel and Sebastian.
- Circus Brat: She was still a small child when the orphans formed the circus and performs as an acrobat now that she's a teenager.
- The Cutie: She's young, nice, good-hearted despite being forced into kidnapping children, and quickly befriends and bonds with Ciel. Sadly, given the kind of series she's in, things don't end well for her.
- Et Tu, Brute?: She really thought of "Smile" as a friend so she's devastated when he reveals his true identity as the Queen's Watchdog and informs her that he and his servants have just killed all of her adoptive family.
- Fashionable Asymmetry: Her performance dress includes stockings of different color.
- Flowers of Femininity: On stage, she wears a wig made of white roses and a tutu decorated with the same kind of flowers. She acts a lot more feminine and graceful when she's dressed up for the performance.
- Genki Girl: Has a very cheerful persona as Freckles. Not so much as Doll.
- Hates Being Alone: As a member of the circus main cast, she should have a tent of her own. She still chooses to bunk with Ciel instead because she doesn't like to sleep alone.
- Innocent Cohabitation: Ends up as Ciel's roommate during his stay at the circus. Ciel had no idea that Freckles was a girl.
- Innocent Blue Eyes: Blue is her eye color, being The Cutie, of course.
- Kill the Cutie: After she found out that Ciel and Sebastian had killed the rest of the circus crew, she tried to attack them. The attempt failed.
- Lady Looks Like a Dude: She looks so masculine that it's easy to mistake her for a boy. When Ciel saw her wearing a dress for the first time, he thought she was a cross-dressing boy instead.
- My God, What Have I Done?: When Ciel gets sick from his asthma, Doll feels guilty that she was one of the factors that caused it.
- Nice Girl: When out of a performance, she's a very nice and friendly girl who honestly wants to befriend "Smile".
- Ore Onna: She uses the aggressive-masculine pronoun of ore to refer to herself in the Japanese version.
- Panty Shot: Several during the Lotus-Eater Machine scene.
- Parasol of Prettiness: When performing, she carries a white, fringe-trimmed parasol that looks nice paired with her tutu.
- Peek-a-Bangs: Covers the left side of her face with her hair. It's to cover the part of her face which is deformed, mainly her eye.
- Revenge: When she finds out that Ciel and Sebastian were the ones who killed the circus crew, she immediately tries to attack them. It goes as well for her as you would expect...
- Savvy Guy, Energetic Girl: The Energetic Girl to Ciel's Savvy Guy during his stay at the circus.
- She Cleans Up Nicely: Inverted. We're first introduced to Doll when she's performing as the elegant ballet dancer in a tutu. Outside the stage, she dresses like a boy to make her completely unrecognizable. Ciel doesn't realize his roommate is Doll until he sees her wearing her performer dress.
- Sugar-and-Ice Personality: There are two distinct sides to her personality: the side of the serious, solemn and quiet performer Doll, and the side that's cheerful, friendly and playful when she's Freckles.
- Tastes Like Friendship: She shares some of her Funtom candy with "Smile" in her attempt to befriend him.
- The Tease: She forces Ciel to touch her chest to prove that she is a girl, and offers him the chance to "take a peek downstairs," as she words it.
- This Is Unforgivable!: Her reaction when she found out that it was Ciel and Sebastian who had killed the rest of the circus crew.
- Tomboyish Voice: She has a low sounding voice which combined with her masculine appearance and behaviour, make it easy to mistake her for a boy.
- Tomboy with a Girly Streak: As masculine as she is, she's still willing to wear a beautiful tutu and put on make up for her performance. She also specializes in aerial ballet.
- Too Good for This Sinful Earth: Even though she was forced into kidnapping children, Doll was truly a sweet and good-hearted girl who didn't deserve to die in such a tragic way. She's one of the few people whom Ciel has felt remorse and guilt over killing.
- Two-Faced: The part of her face that she covers with her hair is deformed.
- Uncertain Doom: All signs suggest that Ciel ordered Sebastian to kill her, but we never actually see it happen, either in the manga or the anime. Also Ciel just said Sebastian's name and we never hear what specifically his order was. While it maybe be just to prevent Doll's death from becoming even more of a Tear Jerker, not showing her death or hearing the order has led a number of fans to some possible speculations.
- Unsettling Gender Reveal: Places Ciel's hands on her breasts to prove that "he" is actually a "she".
- Was It All a Lie?: Once Ciel reveals his true identity to her, Doll is shocked and asks if everything Ciel told her was a lie. Ciel replies that it was and he never had any intention to be her friend, since he came to put an end to the circus for their child kidnappings. Needless to say, Doll didn't take any of this well.
- Youthful Freckles: Hence why her double-identity is nicknamed "Freckles." As Doll they're harder to spot.
Voiced by: Mamoru Miyano (JP), Matthew Mercer (EN)
Live actor: Ryosuke Miura (Muscial)
The surrogate leader of the Noah's Ark Circus, tasked with managing the shows and performing as the pierrot.
- Above Good and Evil: He didn't care what he had to do, as long as he thought it would save the other children.
- Accent Adaptation: In the Japanese version, he uses Kansai Regional Accent in his speech. The English dub has him speak with an Irish accent instead.
- An Arm and a Leg: He's missing his right arm and has to use a prosthetic. Later, Sebastian cuts off Joker's left arm, causing him to die from blood loss.
- Artificial Limbs: His right arm is a prosthetic. Made of children's bones.
- Beneath the Mask: Has two of these - the goofball and the stoic.
- The Chains of Commanding: Is responsible for what his troupe does, and doesn't do.
- Coat Cape: Has a fancy purple-blue cape he wears for show, and a larger grey one he uses for travel.
- Cute Little Fangs: Part of his costume.
- Friend to All Children: Seems to behave this way, for good reason.
- Guy Liner: As part of his costume.
- Hidden Depths: The awesome, friendly ringleader turns out to be The Dragon for a sociopathic stalker.
- Important Hair Accessory: He didn't have clips before.
- Kansai Regional Accent: In the Japanese version, he speaks like this, which reflects his cheerful and emotional persona.
- Knight Templar Big Brother: He will do anything for his foster siblings, even kidnap children because his demented "father" makes him believe he's protecting his brothers and sisters back at the Renbon Workhouse by doing so (although there are actually no children there anymore).
- Laughing Mad: Descends into this after his "father" Baron Kelvin is killed in front of him by Ciel, and his remaining arm is cut off by Sebastian. It's in his name, after all.
- The Leader: Serves as this for the circus members.
- Long-Haired Pretty Boy: He is a pretty attractive guy with hair around his shoulders.
- More Than Meets the Eye: And the whole circus arc is about figuring out just what that is.
- Multicolored Hair: His flashbacks show he's a natural redhead, but he dyes it to be more interesting.
- My God, What Have I Done?: While he and his crew knew it was wrong to kidnap children, they didn't realize the extent of the evil they were doing as they didn't know what Kelvin was using the children for. The kidnappings were in order for the children's bones to be used for prosthetic limbs by the Doctor. Joker was horrified when he found out.
- My Master, Right or Wrong: No matter how much he hates to kidnap innocent children and force them to perform in dangerous shows in which they die gruesomely; if that is what his "father" wants he will do it, since he's still the man who saved him and his "siblings", and the one supposedly protecting the other children at the Renbon Workhouse.
- Never Given a Name: It's implied his mother never bothered to name him, as he has no real name in the death record.
- Nothing Up My Sleeve: He has a knife hidden within his Artificial Limb at all times.
- Not So Different: To Ciel. When he begs Ciel to not kill Kelvin he states that the man is the one who saved them and is helping all their friends at the orphanage. Even if Joker and the others had to do commit horrible actions to further their cause, he still feels it's right if it gives all the abandoned children a better future. Ciel's response shows that he understands their need to better themselves, even if it's at the expense of other people, and replies:"To save your own skins, you obeyed him and sacrificed others... You fought to protect your world. What's wrong with that? In the end, "justice" is just an official line taken by those in power to serve their own ends. No one's looking out for others. If you're careless, you'll be robbed. There are two kinds of people in this world. Those who steal, and those who are stolen from. And today, I steal your futures. That's all this is."
- Oblivious to Love: He apparently isn't aware of Beast's feelings for him.
- Ooh, Me Accent's Slipping: His Irish accent in the dub almost entirely vanishes near the end of the season. Given that he grew up on the streets of London, it's possible that he was simply putting it on to liven up his ringmaster act.
- Perma-Shave: Doesn't seem to have stubble in the morning.
- Red Right Hand: Although technically he isn't evil.
- Son of a Whore: His mother was a prostitute named Karen Taylor.
- Stepford Smiler: He doesn't want to be The Dragon, and to keep the first-tiers together and the rest of the circus happy he pretends everything's okay.
- Undying Loyalty: All he does is for the sake of protecting the other children at Baron Kelvin's workhouse, not knowing they're all dead already.
- Utopia Justifies the Means: Knows full well he's a monster, but would do anything to see his brothers and sisters in the workhouse happy.
Voiced by: Yuko Kaida (JP), Tia Ballard (EN)
Live actor: Asami Tano (Musical)
An animal tamer who regularly performs with her tiger Betty. She is renowned as the star of the Circus.
- Absolute Cleavage: Her costume displays her cleavage.
- An Arm and a Leg: She doesn't have her left leg.
- Artificial Limbs: Her left leg is a prosthetic. Made of children's bones.
- The Beastmaster: She tames tigers, though unlike the usual example she doesn't use them for combat.
- Cool Big Sis: To Dagger and her other "siblings."
- Dark and Troubled Past: She, along all of the circus members, was originally a Street Urchin, abandoned by society because of her missing leg. Baron Kelvin found them and took them in, giving them a better life. Everything was going well until Baron Kelvin went insane over Ciel and started forcing the circus members to kidnap children.
- Dressed Like a Dominatrix: She wears a black leather bodice that exposes most of her cleavage, and a short, black leather skirt with a red sash. She also wears high-heeled boots and thigh-high fishnets with matching fishnet Opera Gloves. To top it off, she wields a whip.
- Final Girl: The last one of the circus members who invaded Phantomhive mansion to die.
- Hopeless Suitor: Beast seems to feel differently about Joker than he does about her.
- Love Makes You Evil: Implied she kidnaps children because she loves Joker, more than she loves Kelvin or the kids at the workhouse.
- Meaningful Name: Her real name revealed in the anime is Mally. Mal usually translates into something along the lines of "bad" or "unpleasant". A suitable way to describe the whole circus situation, not to mention (in Grell's words) she "fell into the snares of the worst man". Might also have a connection to the word "animal".
- Ms. Fanservice: She is easily the most Stripperific female introduced in the series and has one of the biggest busts too. Probably invoked, considering her profession as an entertainer.
- Not Blood Siblings: She has feelings for her "brother" Joker, although they're not actually related.
- Of Corsets Sexy: She wears a corset as part of her costume.
- Raven Hair, Ivory Skin: She's a Ms. Fanservice with black hair and pale skin.
- Red Eyes, Take Warning: Red eyes, and a child-stealer.
- Sex for Solace: Gives in to Sebastian's seduction after Joker ignores her request to run away from their "father" and rejects her feelings for him. Sebastian uses this to get answers out of her.
- Sexy Backless Outfit: Her costume leaves some of her back bare.
- Slap-Slap-Kiss: More like whip, punch, then gets manipulated and seduced by Sebastian.
- Stocking Filler: Her fishnets are held up by a garter belt.
- Whip It Good: Her Weapon of Choice is a whip.
Voiced by: Nobuhiko Okamoto (JP), Michael Sinterniklaas (EN)
Live actor: Ryō Mitsuya (Musical)
The juggler of the Noah's Ark Circus. He is regarded as a talented knife thrower who never misses his target.
- An Arm and a Leg: He's missing his right leg.
- Artificial Limbs: His right leg is a prosthetic. Made of children's bones.
- Blush Stickers: Whenever Beast does something he finds attractive.
- Crazy Jealous Guy: He starts throwing knives at Sebastian when he goes overboard with his examination of Beast's prosthetic leg, particularly because he wants to feel up Beast too.
- Died in Your Arms Tonight: He dies in Beast's arms.
- Dogged Nice Guy: He's very open about his crush on Beast who mostly ignores his advances because she likes Joker better.
- Dying Declaration of Love: His final words are to Beast, telling her he wanted to take her "over the hill."
- Guy Liner: As part of his costume.
- Hopeless Suitor: He has a big crush on Beast who in return is in unrequited love with Joker.
- Keet: Unlike Joker, it seems to be his actual personality rather than a facade.
- Knife Nut: He is the knife thrower. Makes sense daggers would be his Weapon of Choice.
- Not Blood Siblings: He has a crush on his foster sister Beast.
- Senseless Sacrifice: He dies trying to protect Beast from Baldroy, only for her to die in an explosion afterwards.
- Skilled, but Naïve: Very good at what he does, but he never questions Joker or the Baron.
- Taking the Bullet: For Beast, which leads to his death.
Voiced by: Ryōkan Koyanagi (JP), Christopher Sabat (EN)
Live actor: Takenori Gotō (Musical)
The fire breather of the Noah's Ark Circus.
- Apologetic Attacker: After he seemingly kills Finny he apologized, not wanting to devolve even more into such brutality.
- Bald of Evil: Further accentuated with his head tattoos.
- Blood from the Mouth: From his fight with Finny.
- Bruiser with a Soft Center: He's gentle and kind to the children and he also caved in the skull of a police officer who was trying to protect a child Jumbo and the others were trying to kidnap.
- The Brute: He's the biggest and most muscular of the Circus Crew.
- Pet the Dog: Repeatedly, from giving Dagger a piggie back ride so he could play with the children to warning off the rest of his teammates from Phantomhive manner just as he's killed.
- The Stoic: When performing or out committing crimes his demeanor is rigid and unfazed. Outside of that he's a pleasant kind fellow.
- Token Adult: When the first stringers were all left out on the street as children, he was the only homeless adult with them.
- Underestimating Badassery: He underestimates Finny, and it gets him killed.
- Walking Shirtless Scene: His circus costume only features a medallion covering his chest.
- The Worf Effect: He's the biggest and most imposing of the First Stringers and the first to die when they assault the mansion.
Peter voiced by: Yuuki Tai (JP), Vic Mignogna (EN)
Wendy voiced by: Mayumi Shintani (JP), Rachel Robinson (EN)
Peter's live actor: Ayuka Kurachi (Musical)
Wendy's live actor: Saya Chinen (Musical)
A pair of trapeze artists for Noah's Ark Circus.
- Anachronism Stew: Their stage names as a duo are actually set over a decade before Peter Pan would be written.
- Meaningful Name: A Shout-Out for Peter Pan that matches their physical appearance, children who Never Grew Up.
- Older Than They Look: Flashbacks imply they have stunted growth. The other members of the circus call them "big brother/sister" so they're probably the oldest of the group despite looking like children.
- Out of Focus: Wendy gets by far the least dialogue and development of any of the circus troupe, with Peter doing most of the talking.
- Those Two Guys: Played straight for performances and combat. Subverted in that they spend a good amount of time in separate scenes from each other.
- Wire Fu: Their Weapon of Choice. Fitting for trapeze artists, as they use the wires to swing about.
Voiced by: Chafurin (JP), Mike McFarland (EN)
Live actor: Shinya Kote (Musical)
A philanthropist, and the creator and financial supporter of the Noah's Ark Circus. He is referred to as "Father" by the first-string members, except Snake.
- Abhorrent Admirer: To Ciel. He sees the boy as the ultimate epitome of beauty and did everything to get his attention, even reenact the day Ciel was sacrificed. Ciel's response is to shoot him point-blank.
- Abusive Dad: He forces his devoted children to kidnap other children and is shown to treat them like crap after becoming obsessed with Ciel and "beauty".
- Arc Villain: Of the "Circus Arc/Book of Circus."
- Aristocrats Are Evil: Gradually became this once he met Ciel.
- An Arm and a Leg: He had both of his legs cut off during surgery.
- Ax-Crazy: Years of pursuing what he calls perfection has twisted him beyond any and all repair.
- Bandaged Face: Was about to undergo plastic surgery, which didn't take when he heard that the Phantomhives had been assassinated.
- Death Seeker: He wished to die in the very same way that Sebastian had massacred the occultists during Ciel's attempted sacrifice three years prior.
- Evil Cripple: He's a creepy villain in a wheelchair. Though unlike most examples he's a self-inflicted version as he lost his legs from all the procedures he subjected himself in order to become "beautiful".
- Evil Has a Bad Sense of Humor: He seems to think watching children be killed and eaten by lions is fun.
- Fat Bastard: Used to be Big Fun, but now...
- Flaw Exploitation: He takes advantage of the circus crew's life debt to him as well as their attachment to the Renbon Workhouse to carry out crimes for him.
- Hate Sink: He's one of the most disgusting and detestable villains in the series, particularly because of his creepy obsession with Ciel and being behind the kidnapping and deaths of many innocent children.
- I Have Your Wife: Kelvin uses his access to the first-tier members' "brothers and sisters" in the Renbon Workhouse and his ability to aid or hinder them, to control the first-tier members and get them to do want he wants, no matter how much they hate it. Later, Ciel and Sebastian discover that Kelvin had lied about keeping the other children at the Renbon Workhouse alive. They assume Kelvin most likely allowed Doctor to kill them for his experiments with artificial limbs. Meaning that all Joker and the rest did was for nothing.
- I Just Want to Be Beautiful: After his second meeting with the Phantomhive household, he becomes obsessed with becoming beautiful so he can be with Ciel. He even underwent extensive surgery to make himself more attractive, leaving him crippled in the process.Kelvin: Oh... I get it now. Special people can only be touched by other special people. I'm too ugly to even think about touching them.
- Karmic Death: After everything this creep did, you don't feel sorry for him when he gets killed by the boy he was obsessed with.
- Love at First Sight: The moment he laid his eyes on Ciel, the old man became obsessed.
- Love Makes You Crazy: Before he met Ciel, the old man appeared to be a well-adjusted fellow. Then he decided the only way to get Ciel was to be as beautiful as him and to say he's got a few screws loose now would be an understatement.
- Love Makes You Evil: He used to be a kindly philanthropist who took in Street Urchins, but then he met Ciel, became obsessed with beauty and is now a crazy sadist who kidnaps children to have their bones to be used for prosthetic limbs and forces the rest of them to do sick "performances".
- Mad Love: He met Ciel only once and after that, the old creep cared for nothing more than getting the boy's attention. To the point where what he really wants is to die by Ciel's hands. He doesn't appear to get a hint that the boy only finds him repulsive until Ciel literally shoots him.
- Malevolent Mutilation: Has the children that Joker and the others kidnap on his orders subjected to this, so that Doctor can use their bones to make his new prosthetics limbs.
- My Greatest Failure: In a very twisted way; he regards his absence from the fateful ceremony during which Ciel was intended to be sacrificed, and which summoned Sebastian three years ago, to be this. (Even though that he had gone through such extensive surgery to the point of being bedridden, due to his obsession with Ciel, was why). Therefore, he decided to end up kidnapping and mutilating countless children, under the masquerade of Joker and the others' circus troupe; and over the next three years, meticulously constructed an exact replica of the ritual ceremony to undertake with Ciel, for Ciel and Sebastian.
- Psychopathic Manchild: He pretty much acts like a child who treats the children he keeps like they were his toys, doesn't care what he breaks to get what he wants and is only trying to get the attention of his object of obsession, Ciel.
- Sanity Slippage: Seemed to be a good guy at first, then his obsession with "beauty" starts to manifest...
- Serial Killer: He was responsible for the kidnapping case that Ciel was investigating.
- The Sociopath: Becomes this after his "fall". He orders children to perform deadly tricks and laughs when they inevitably die.
- Stalker with a Crush: He's creepily obsessed with Ciel. He even keeps wine bottles from the year he was born.
- Trademark Favorite Food: He seems overly fond of lobster.
- Villainous Crush: He has been obsessing over Ciel ever since he met the little boy at a party.
- Would Hurt a Child: The children he kidnapped were forced to perform to their death, or intended as sacrificial lambs.
Voiced by: Satoshi Mikami (JP), Alex Organ (EN)
Live actor: Nobuo Kyō (Musical)
A doctor who works at the Noah's Ark Circus to tend to the members' injuries and their prosthetic limbs, which he has constructed himself.
- Bitch in Sheep's Clothing: He gives the impression of a harmless and affable doctor. At the end of the arc, he reveals himself as a Mad Doctor who doesn't care to sacrifice the lives of innocent children for his own benefit.
- Butt-Monkey: He can only ask for the First-stringers to stop destroying his hospital with their fighting, and he tends to be ignored.
- The Dog Was the Mastermind: Averted. He has many of the traits, being the non-suspicious man behind the man, supplying the evil plan exposition and also being the last man standing after the supposed mastermind, Kelvin. However, Kelvin remains the true mastermind; he ordered the kidnappings, had the children murdered, and kicked off the plot with his mad desire for Ciel, while the doctor only decided to Let No Crisis Go to Waste and create his limbs.
- Everyone Calls Him "Barkeep": He's only referred to as Doctor.
- Evil All Along: He was Kelvin's accomplice all along and the children kidnappings were in order for the doctor to use their bones for his prosthetics.
- Four Eyes, Zero Soul: Post-Reveal. His lack of expression combined with his glasses newfound reflective traits serves to give him a detached sociopathic look.
- Hate Sink: He's nearly as hateable as Baron Kelvin, being a Mad Doctor who happily kills children and uses their bones for his prosthetic limbs.
- Lack of Empathy: He doesn't understand why killing children for his experiments is wrong, comparing their worth to the lives of cows whose bones would normally be used for the prosthetics.
- Mad Doctor: He's been making the artificial limbs out of bones, specifically children's.
- Obfuscating Disability: He's pretending to be unable to walk as it makes him easier to trust.
- Villainous Friendship: Type 4 with Baron Kelvin. He was willing to perform operations to make Kelvin "Beautiful" and supported his evil doings. He valued Kelvin and admired him as Kelvin shared his principles and disregard for life. When Kelvin dies, the Doctor admits its a shame, and promptly gets over it, asking Ciel if he could get a job from him.
- Walking Spoiler: He doesn't have that many appearances, but in his last he drops quite a few reveals. This is also in a literal sense as he's revealed to be able to walk.
- Would Hurt a Child: He uses children's bones to create his prosthetics. And that's just the start.