Soma Asman Kadar
Voiced by: Shinnosuke Tachibana (JP), Chris Ayres (EN)
Live actor: Shō Jinnai (Musical)
An Indian prince, and the twenty-sixth child of the Raja of Bengal. He came to England to track down his nursemaid Mina, but after learning that Mina left India on purpose to become a rich man's wife and that she hated him for his ignorance and self-absorbed personality, Soma decided to stay with Ciel and learn how to act as a gentleman and even proclaims to be Ciel's best friend.
- Attention Whore: During his introduction, he craves for the attention of everyone around him. He keeps interrupting Ciel's schedule just so he plays with him. Soma grows out of it after becoming more mature.
- Because You Were Nice to Me: Turns out, he takes this to extremes.
- The real reason he rescued Agni from execution years ago had something to do with a previous incident where Agni saved Soma.
- He stays in London constantly trying to befriend someone who he knows dislikes him because Ciel helped him become a better person, and he wants to return the favor.
- Berserker Tears: After Agni's death, when Ciel was approach him and asks him what happen, he punched him in tears.
- Big Brother Instinct: He develops this for Ciel, much to the latter's annoyance.
- Bishōnen: Notably cute, which makes him attractive as part of Ciel's Boy Band.
- Break the Cutie: He gets broken in Chapter 127 when Agni dies.
- Heterosexual Life-Partners: He and Agni care deeply about each other, and they are always seen together.
- Hidden Depths:
- He knows full well what kind of person Ciel is, and that Ciel doesn't return his feelings of friendship. But because he wants to pay Ciel back for helping him get his act together, and because he sees Ciel's potential for improvement, he stays in England. He's fully aware that Ciel might stay forever alone and bitter, but he'd rather risk being hurt for a chance to help save Ciel.
- Apparently his backstory with Agni isn't as straightforward as it first appeared to be.
- Impaled Palm: In chapter 127, Soma saves himself from being killed by placing his right hand in front of gun instead. Thus, badly injured his hand.
- Keet: He's very cheerful and happy-go-lucky.
- Lonely Rich Kid: His parents didn't give him any attention at the castle and the servant he was close to was Mina.
- Nice Guy: A bit self-centered, but a genuinely good guy.
- O.O.C. Is Serious Business: He flies into an uncharacteristic rage when three robbers assault a boy and his mother and try to steal the urn containing Agni's cremated remains.
- Pretty Freeloader: Despite being a filthy-rich prince, he decides to live under Ciel's roof.
- Revenge: He greatly wants revenge on someone who looks like Ciel who killed Agni.
- Smarter Than You Look: Massive ditz, but intelligent and well-educated enough from a young age that the finest academy in England has nothing to teach him. He was bored. It also turns out he's got a better understanding of Ciel's true personality than any other character except Sebastian.
- Tears of Blood: Soma starts to cry tears of blood similar to how Agni was after he beat up three thugs who attempted to steal Agni's cremated remains. It implies he somehow obtained Agni's supernatural power.
- Those Two Guys: When partnered with Agni. Until Chapter 127 has Agni killed off.
- Trademark Favorite Food: He loves curry.
- Would Hurt a Child: In chapter 128, Blinded by rage after losing Agni, Soma punched Ciel. It's implied by the following chapter that he did it because he thought Ciel was the other "Ciel".
- Wrong Genre Savvy: Tries to track down his nursemaid Mina, believing she'd been kidnapped by an Englishman, only to find out that she left India on purpose because her caste meant she would only ever be a servant and instead wanted to be a rich man's wife.
- You Gotta Have Blue Hair: He has dark purple hair.
Voiced by: Hiroki Yasumoto (JP), Patrick Seitz (EN)
Live actor: TAKUYA (Musical)
A Brahmin who renounced his old ways to become Soma's servant.
- The Ace: He may not be a demon but he's a competent fighter and very good at whatever task he needs to accomplish. He was even able to get Bardroy, Mey-Rin, and Finny to actually work competently, simply by assessing their strengths and weaknesses, something that even Sebastain for all his badassery can't do!
- Badass Normal: Agni's a capable fighter, able to stand up and hold his own against Sebastian, despite being a completely ordinary human. Sebastian calls him an "extraordinary specimen".
- Battle Butler: Comes off as a rather benign foreign counterpart to Sebastian.
- Catchphrase: "Jo aagyaa", a (phonetically-spelled) Hindi phrase roughly meaning "As you command".
- Charles Atlas Super Power: At first, Ciel believed him to be another supernatural creature, since he managed to achieve a draw in a duel against Sebastian. But the latter reassures him that Agni is a normal human, despite his skills.
- Chef of Iron: Also, a Supreme Chef. The "Hand of God" isn't a reference to his combat prowess but rather to his cooking.
- Curtains Match the Window
- Dark-Skinned Blond
- Eye Scream: In chapter 127, Agni lose his right eye to an unknown assassin.
- Go Out with a Smile: Despite losing his eye and bleeding to death, he gives one last smile to his master before locking Soma in a closet to protect him from the assassins.
- Heroic Sacrifice: In Chapter 127, he sacrifices himself to keep Soma safe from being killed by an unknown assassin.
- Heterosexual Life-Partners: He and Soma care deeply about each other, they are always together.
- Hired Help as Family: His master Soma treats him as something between a close friend and a family member.
- Important Haircut: Soma cut his hair when he saved him from his execution and gave him a new name.
- I Owe You My Life: Agni used to commit a lot of crimes in the past, and he was sentenced to death for his deeds. But Soma pardons him, and Agni had been a loyal servant to him ever since.
- Karma Houdini: Tries to defy it. In the manga, he spends an entire chapter trying to confess to Scotland Yard about being blackmailed by West into attacking people, but Ciel stops him.
- Like a God to Me: When Soma saved his life, Agni came to believe Soma was the incarnation of the gods.
- Mundane Utility: His "blessed hand" is perfect for making curry because it instinctively knows which spices and how much of each are the right combination. Characters even call it the "curry of Kali".
- Nice Guy: One of the most kind-hearted, compassionate and loyal characters in the series.
- Only One Name: He is only refer as Agni instead of his real name he abandon long time ago.
- Pressure Point: He makes use of them in his fighting. Notably he uses this ability to free Ciel's servants from Hannah's brainwashing in season 2.
- Religious and Mythological Theme Naming: Named after the Hindu god of fire.
- Sacrificial Lion: In Chapter 127, he was killed protecting Soma from an unknown assassin. He was stabbed seven times.
- Spared by the Adaptation: In anime of season 2, he's alive and well by his master side, but in the manga, he was killed by an unknown assassin in Blue Cult Arc.
- Tears of Blood
- Those Two Guys: When partnered with Soma. Until his death in Chapter 127.
- Undying Loyalty: To his master Soma, who he calls "his sun". Agni obeys every command Soma gives him without question. Soma saved him from being executed, and he will never stop repaying it. To the point where even in death, his grip on the door Soma was behind was so strong that Sebastian would rather pull the door-handle off than try to undo Agni's grip.
Lord Aleister Chamber
Voiced by: Tatsuhisa Suzuki (JP), Todd Haberkorn (EN)
Live actors: Fujita Ray ; Yoshihide Sasaki [2013-Current] (Musical}
A nobleman well-known for his fine tastes and parties held during the social season. Ciel's group infiltrates in one of his parties because he's suspected of being Jack the Ripper.
- Abhorrent Admirer: Of all the people to show interest, he ranks fairly high on Ciel's No Yay scale.
- Ambiguously Evil: How evil/dangerous is he? Selling girls into sexual slavery, sacrifice, etc, is not cool, but given how he keeps popping up in connection to Ciel's cases, it's unclear just how deep his bastardry goes...
- Beauty Is Bad: Has a lot of fangirls both in universe, but shows himself to be a crazy asshole in every appearance.
- Blue Blood
- Depraved Bisexual: He's as flamboyant as you get and flirts with Ciel (both in and out of drag), and loves the ladies. Considering Eric, and the very historical figure hes based on, he probably doesnt second glance men at ALL.
- Character Exaggeration: So VERY much in the Musical. Enforced because the author AND director encouraged Hidedruitt to really let go regardless of the canon interpretation , to be less graceful and more ecchi and disgusting. That said, everything about him; the flamboyancy, certain craziness, and his overall (implied) perversity could even be matched up with the over-the-top anime counterpart from season two.
- Chekhov's Gunman: In the manga, he shows up very early on and later comes back as a villain again in the Zombie-Titanic arc. Later his family connection to Edgar Redmond turns out to be important.
- Cloudcuckoolander: To put it mildly. Ciel ouright calls him certifiable in Season 2, if his ridiculously over-the-top descriptions of food and flamboyant behaviour didn't give that impression already.
- Combat Commentator: In Episode 7 of the 2nd season.
- Diminishing Villain Threat:
- More so in the anime than in the manga, though he's not much of a threat in both canons. In the anime, he goes from being a shady prostitution dealer to rather ridiculous, Ho Yay riddled comic relief.
- His involvement in illegal affairs remains intact, as demonstrated by being a member of 'the Phoenix', a shady medical cult.
- Large Ham
- Pirates Who Don't Do Anything: Has a medical degree, but never does anything... er, medical.
- Running Gag: Whenever he sees or tastes something he enjoys, he'll always make at least one reference to the "Lady Robin" who captured his heart that time at his party. And Ciel just happens to be nearby every time he does...
- The Nicknamer: He calls every woman he finds attractive a "Robin". Which becomes a touch creepy when he calls Ciel one.
- Sissy Villain: He has the personality certainly but not much in terms of looks.
- Wicked Cultured
Voiced by: Hisayoshi Suganuma (JP), Jonathan Brooks (EN)
Live actors: Ise Naohiro  Shun Takagi [2013-Current] (Musical)
The chief inspector of Scotland Yard. He works under Arthur Randall, and is the only officer in Scotland Yard besides the commissioner that is aware of Ciel's identity as the Queen's Watchdog.
- Death by Adaptation: In the anime's first season he's impaled by Lau when trying to protect Ciel. In the Manga he's still kicking around, and when the Anime adapts the Circus storyline he's still in his original role.
- Fair Cop
- Friend to All Children: He feels sorry for Ciel because he's a burdened child.
- Go Out with a Smile: In the anime.
- Heroic Sacrifice: In the anime.
- Hidden Depths: As the show goes on he's shown to be a pretty empathetic reasonable man. Able to see Ciel's rants about being alone as trying to bury the loss of his parents, as Fred himself knows what it's like to be an orphan. He and another officer also displayed a talent at ice sculpture, able to construct a very accurate, if weak necked sculpture of their boss.
- Named After Somebody Famous: Or rather, is someone famous.
- Nice Guy
- Retirony: Mentions to a friend and Ciel his upcoming marriage and thoughts of parenthood. Nice knowing ya Fred.
Voiced by: Yui Itsuki (JP), Jessica Cavanagh (EN)
The maid and dear friend of Elizabeth.
- Canon Immigrant: Originally an anime-only character, she later makes multiple appearances in Lizzie's flashbacks in the Ship Voyage arc in the manga, then appears in the present (albeit as a cameo) with Elizabeth as a spectator of the cricket tournament in the Public School arc, and then once more at the beginning of the Blue Order arc.
- Broken Tears: In chapter 129, despite being reunited with Edward, she looks very saddened after he mentions his sister's whereabouts. She sadly states that Elizabeth "has gone to where she belongs". After that she continues to shed tears uncontrollably.
- Catchphrase: "Jingle jingle!"
- Curtains Match the Window: Paula has brown eyes and hair.
- Damsel in Distress: In the manga, it was revealed during Blue Cult arc that she was forced against her will to work at Sphere Music Hall until Scotland Yard raided the hall, but they detail Paula and send a notice to Edward afterwards.
- Meido: She works as Elizabeth's personal maid.
- So Unfunny, It's Funny: Her attempts at cheering Lizzie up in the anime are very awkward, but endearing.
Voiced by: Shintaro Asanuma (JP), Taliesin Jaffe (EN)
A poor oculist and struggling writer, who is invited to the Phantomhive manor in the Murder Mystery arc. He becomes the recorder of the strange and bizarre events that occur at the Phantomhive Manor. He's all but stated to be Arthur Conan Doyle, though his full name is never revealed.
- Been There, Shaped History: Ciel and Sebastian explaining to him what really happened with the murders-including Sebastian being a demon-is what lead him to continue writing.
- Big Brother Instinct: Towards Ciel.
- Broken Masquerade: Arthur is the only Muggle person to know Sebastian is a demon and live to not tell the tale.
- Genre Savvy: Being a mystery writer in his spare time, he's well-aware of certain relating tropes, and even learns some new ones during the course of the story.
- Horrible Judge of Character: Played With In the Murder Mystery Arc. He states, correctly, that Ciel isn't the murderer in spite of a lot of the circumstantial evidence against him. However he does so because it's his belief that Ciel has a good heart and wouldn't stoop to murder. Ciel's ordered the death of dozens of people even before the arc began.
- It Will Never Catch On: Arthur is positive that A Study in Scarlet won't be popular and isn't keen on writing the character again. Ciel and Sebastian change his mind.
- Just Between You and Me: Ciel and Sebastian reveal to Arthur not only the details of their scheme but also that Sebastian is a demon. They allow Arthur to go free... but not before warning him that if he ever tells a soul about their secret then Arthur will be killed. Oh, and they'll always be watching...
- Massive Numbered Siblings: He has 10 siblings.
- Nice Guy: He's polite, gentle, if a little bit of a pushover. He was quite protective of Ciel, and was one of the only persons in the Murder Mystery arc who maintains his faith for the boy when the latter becomes a prime suspect for a murder.
- One Steve Limit: Averted. This is the manga's second Arthur, sharing a name with Arthur Randall, the Scotland Yard Commissioner.
- What the Hell Is That Accent?: His dub voice is mainly English-accented, with the occasional, random outburst of Scottish. Most evident with the word 'murder'.
- Write What You Know: In-Universe, his experiences at the Phantomhive manor inspire many story elements he'd use in the next Sherlock Holmes books.
- Young Future Famous People: He's a young Arthur Conan Doyle. He's never called by his full name, but it's made extremely obvious.
- Curtains Match the Window: She has long dark brown hair and eyes.
- Does Not Like Men: She strongly despises men, except young boys like Ciel.
- The Fashionista: She is an excellent tailor in England.
- Sitcom Archnemesis: Usually towards Sebastian, whom she butts heads with regarding payment for the clothes she makes. In fact, during her debut chapter, she addresses Sebastian as "Mr. Stiff." Considering Seb's snarky attitude towards her, it's fair to say that the feeling is casually mutual.
- Skinship Grope: Immediately feels up poor Mey-Rin in her first appearance.
- Who Wears Short Shorts?: She wears shorts underneath her skirt.