Characters from Layton Brothers: Mystery Room. Be able to deduct that most of these are pretty much a Walking Spoiler.
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Scotland Yard
Lucy Baker

- Curtains Match the Window
- Declarative Finger: One of her frequent sprites is this.
- Dub Name Change: From Lucy Creila.
- Expy: Of Luke Triton from the original Professor Layton series. They even wear similar-looking hats.
- Naïve Newcomer: She starts out at the beginning of the game as a new officer starting out as Alfendi's assistant.
- Never Bareheaded: Wears a large orange cap on her head at all times.
- Oop North: Her dialogue has a notable Yorkshire accent to it, particularly her regular use of 'were' in place of 'was' in many sentences.
- Player Character: Despite the title Layton Brothers, she's the character you actually play as.
- Plucky Girl: Lampshaded by the "other" Alfendi in Case 3.
- Pungeon Master: Has a tendency to be this. Case 8 replaced the victim and suspects with animals and many of her responses were puns about the people/environment, especially during her interrogation with the suspects.
Alfendi Layton

- Anime Hair: With a large ahoge to boot.
- Beware the Nice Ones: Alfendi is nice and quite a mild-mannered gentleman like his father, but every time he and Lucy confronts the true culprit in a case, Alfendi will not hesitate to get rough, hotheaded and offensive on them, most egregiously in Case 5 when Mike de Bonair deliberately gets his last name wrong so many times. Alfendi, now past his temper's limit, threatens to cut de Bonair's tongue out, taking the former by surprise. Subverted when it's discovered later on that his impulsive demeanor is the split personality closer to the original Alfendi.
- Fake Memories: "Placid" Layton claims that he is the one who killed Keelan Makepeace while "Potty" Layton has no memories beyond the shooting. The fake memories are courtesy of Justin Lawson.
- Exposition Fairy: He essentially serves as a guide teaching you how to play the game.
- Good Cop/Bad Cop: Played With. He's both.
- Leeroy Jenkins: Averted. Alfendi is much more likely to think things over before jumping ahead, the only exception being Case 9, where people's safety was at jeopardy if he didn't comply with Diane. However, the real Prof doesn't seem to be this, jumping ahead of his colleagues when Keelan Makepeace's location was first discovered, leading him to a trap .
- Jekyll & Hyde: His other side, which is more violent and even threatens to kill someone during interrogations.
- Mentor Archetype: To Lucy.
- Missing Mom: She's never mentioned in-game.
- Nice Guy: Is generally level-headed and usually says things in the nicest way possible, despite the insults thrown at him by the suspects. At least, until the other Alfendi comes out, much to Lucy's horror.
- The Professor: Serves as Lucy's mentor. Isn't too fond of the nickname though.
- Tomato in the Mirror: His other rude personality is actually his original personality. The nice personality was a new personality that appeared after the incident where he was shot.
- Sibling Yin-Yang: He's more aloof and temperamental compared to his eccentric, but more outgoing younger sister, Katrielle Layton.
- Split Personality: Occasionally swaps into a more threatening personality, dubbed "Potty Prof". Turns out that this split personality is actually the original, with the current "Placid Prof" actually being created through brainwashing
- Superpowered Evil Side: His other side often provides the key deduction that ultimately cracks the case, due to being able to think like a criminal.
The Commissioner

- Adaptational Badass: Went from Chelmey's sidekick to commissioner of the Scotland Yard.
- Big Eater: In the ending credits, we see him eat a large plate of food.
- The Commissioner Gordon: Averted since the main characters are members of the police force. But played straight in the last scene of the game, which is a Sequel Hook showing the Commisioner calling Amateur Sleuth Hershel Layton asking for help.
- Continuity Nod: He used to be Inspector Chelmey's sidekick.
- Cool Old Guy
Deputy Commissioner Chan

- Hypocrite: When it comes to superstitions.
- Jerk with a Heart of Gold: Despite being incredibly discouraging to Lucy about working in the Mystery Room, he does worry about her safety. Mainly because the inspector she works under has a split personality.
Florence Sich

- Dub Name Change: From Barbara Folky.
- Meaningful Name: Her surname is pronounced "sick".
- It also sounds very similar to "Forensic."
- Proper Tights With Skirt: Noticeable in her full profile picture.
Justin Lawson

- Dirty Cop
- Dub Name Change: From Don Doneghan.
- Hardboiled Detective
- Jerk with a Heart of Gold: Despite being responsible for at least half of the Jigsaw Killings, he couldn't bring himself to kill Alfendi twice, despite having the chance. He is also the one who suggested listening to Alfendi's statements.
- Treacherous Advisor: While she does this to other people as well, Lucy generally brings up Alfendi's behaviour to Justin, who at one point told Lucy to come to him if Alfendi mentions any specific people or names. Turns out he's the main reason why Alfendi has his split personality in the first place. When Diane Makepeace appears, Justin's paranoia comes out, as he's not sure what her father had said to her before his death. As he was already rattled with Lucy's reports about Alfendi's behavior hinting the 'Real Alfendi' aka "Potty Prof" might spill more of the truth about that night, he couldn't take the chance of Diane finishing the job and exposing him. So she had to be Killed to Uphold the Masquerade.
Dustin Scowers

- Almighty Janitor
- Dub Name Change: From Fookey Lionnel.
- Punny Name: Dust and Scour (to scour is to scrub).
'Sniffer' Hague

- Blind Without 'Em: Has terrible eyesight.
- Dub Name Change: From Strode Wedge.
Hilda Pertinax

- Dub Name Change: From Hilda Swanson.
- Lovable Alpha Bitch: Downplayed. She scolds Lucy for eavesdropping on her conversation with Alfendi despite it being quite loud, is a bit bossy, and was initially adamant that Alfendi killed Diane Makepeace. However, she generally looks after Lucy, telling her Placid Prof was the fake persona and offering her comfort. By the end of Case 9, she sides with Lucy on her theory about the true killer (though Hilda will begin to regret it if the player makes a mistake).
The Victims
Sandy Aldwich
A woman found dead on her vacation at a five-star hotel. For some odd reason, her hand was found in the sandwich she ordered.- Asshole Victim: She gets her money from her boyfriends and then dumps them for another man.
- Dub Name Change: From Patty Herwig.
- Dying Clue: Supposedly left one as she was apparently a fan of crime fiction. Too bad the very existence of the dying message gave it away as a fake which proved vital for Alfendi and Lucy to fish out the murderer.
- Gold Digger: Possibly. According to the killer, they used to be an item until he ran out of money, at which point she promptly dumped him. Also, her current lover is a wealthy businessman who is paying for everything on their luxurious vacation.
- Punny Name: Sandwich.
Jack Potsby
A loser who recently won a huge sum of money.- Punny Name: Jackpot.
- Dub Name Change: From Dexter Oldis.
Gloria Blaise
The lead actor of a play where she was the heroine.- Driven to Suicide: She made it elaborate enough to frame Strapping for murder.
- Dub Name Change: From Isabella Ferrer.
- Punny Name: Blaze of glory.
- Suicide by Cop
Archie O'Logie
A world-famous archaeology professor.- Dub Name Change: From Otto Bergman.
- Punny Name: Archaeology.
- Stealing the Credit: Accused of taking others' credit for his discoveries.
Dwight Dread
A DJ who hosted a famous radio show.- Asshole Victim: Once he found out de Bonair had been stealing profits from the radio station, he blackmailed him by having de Bonair give him money.
- Meaningful Name: Dread refers to the dreadlocks of his wig.
Anice Brewer
A tea lady working at a radio station.- Fangirl: Of Dwight Dread. Unfortunately, this was exploited to help the murderer kill the main victim and then pin the blame on her
- Proper Tights With Skirt
- Punny Name: A nice brewer.
- Red Herring: Thanks to Sniffer.
- Spanner in the Works: Miraculously, she survives her poisoning long enough to leave a Dying Clue.
- Unwitting Pawn
Severino Agonni
A mafia boss and head of the Agonni family.- Asshole Victim
- Driven to Suicide: One possibility raised during the investigation. He wasn't a suicide.
- Dub Name Change: From Demise Tettorini.
- Properly Paranoid: He moved his gang's hideout to a warehouse in the docks because he feared that someone might kill him, and it turns out that he was right that someone wanted him dead. Specifically, Diane Makepeace, with the help from his right-hand man, Sassina, killed him because he betrayed her father at one point.
- Punny Name: Severe agony.
Barbarossa Sassina
Agonni's right-hand man.- Asshole Victim: Not according to Mistry's story of him.
- Dragon with an Agenda: Drugged and killed half of the members while he burned his boss.
- Punny Name: Barbarous assassin.
Pearce 'Blood' Boyle
The Agonni family's strongman.- Asshole Victim: A lot of people already wanted him dead because of his countless convictions for assault.
- Punny Name: Pierce boil.
Angelo Fassi
A new recruit of the Agonni family and served as their pretty boy.- Asshole Victim: For being a serial fraudster and larcenist.
- Bishounen: In-Universe, this is what his profile describes him as.
- Punny Name: Angel face.
Keelan Makepeace
The serial killer responsible for the Jigsaw Puzzle Killings.- Asshole Victim
- Bad Guys Do the Dirty Work: Some of his killings were requested by Justin when the Yard couldn't catch the criminals themselves.
- Kill the Creditor: Diane told Lucy that Keelan owed Pig a LOT of money, but one day Keelan flipped, and killed Pig rather than pay him back.
- The Killer Becomes the Killed
- Posthumous Character: Died from the incident at Forbodium Castle four years ago
- Punny Name: Kill and make peace.
Pig
A millionaire who has a few associates with enough motive to kill him.- Asshole Victim: At least that's what his colleagues think of him as.
Diane Makepeace
Detailed more on the Suspects section. The Suspects
Bosco Felps
Aldwich's lover and for business purposes, refused to tell the police his identity.- Dub Name Change: From Gerald Felps.
- Spell My Name with an S: An in-universe example. Carrière thought his last name was "Phelps" instead of Felps".
- No Celebrities Were Harmed: This guy is practically Mr. T in a business suit. One of his arrows even says
"I pity the fool!" and Lucy warned him to "B-A-round!" for further questioning.
Zach Carrière
A bellboy who brought Aldwich her sandwich.- Dub Name Change: From Van Gerard.
- Fanboy: He is a self-admitted fan of crime fiction.
- French Jerk: Double Subverted. He tries to be helpful to Alfendi and Lucy until he learns that he is their main suspect.
- Great Escape: Seems to be discussing ways to escape prison with de Bonair in the credits.
- Narcissist
- Starter Villain
Vera Wipovsky
The hotel cleaner who found Aldwich's dead body.- Dub Name Change: From Talia Ilvonski.
- Red Herring: If you think that her description gives her the possible motive of killing Aldwich because her husband might have cheated on her with Aldwich, then think again.
- Team Mom: Has this relationship with her hotel employees.
Goldie Potsby-Mahn
Jack Potsby's wife.- Black Widow: She had three husbands before Potsby and became rich from their life insurance. Despite that, she's apparently innocent according to the police and insurance companies. She messed up when it came to killing Potsby.
- Graceful Ladies Like Purple: Wears a slinky purple dress.
- Insurance Fraud: Suspected of such because her previous three husbands all died, and she got rich from the life insurance. She slipped up when killing Potsby, who had been spending money like crazy.
- Pretty in Mink: Has a white fur coat
◊.
- Shower Scene: There's a brief picture of her in the shower.
- Smug Smiler: Repeatedly gives this smile when discussing the murder weapon and how Alfendi and Lucy will never find it. And for good reason, since the murder weapon no longer exists.
Chase M. Downes
The muscular concierge of the apartment where Potsby lived in.- Red Herring: His being muscular and joining an exclusive gym would make him match Goldie Potsby-Mahn's description of the burglar, but that's a dead end.
- Punny Name: Chase 'em down.
Buster Nicks
An old serial burglar.- Blatant Burglar
- Dub Name Change: From Derek Mosley.
- Meaningful Name: To "nick" something is to steal it. Buster nicks indeed.
- Not Me This Time: He has a reputation as a petty criminal, and indeed was planning on breaking into a flat in Jack's building, but not his flat.
Bingo
Potsby-Mahn's new boyfriend. He's not actually a suspect, though.- Beast Man: Looks less like a human and more like a lion standing on his hind legs. Goldie even keeps him on a leash like a pet cat!
- Dub Name Change: From Gyris.
- Meaningful Name: Named after the dog in the folk song "Bingo Was His Name-O".
- The Voiceless: Does speak sometimes, but it's basically barking.
Roscoe Strapping
A famous actor partly known for his debauchery.- All Men Are Perverts: He not only hits on Lucy but also assumes that Alfendi is getting some action from her. Because he believes that's what men do when they have cute female assistants.
- Demoted to Extra: In-Universe. In the credits he's shown as a lowly stagehand while Knox and Clegg are on stage. Presumably, the results from the case created a scandal that ruined his acting career or got him legally punished from hitting Clegg as part of his scheme to frame him.
- Drama Queen: Is really dramatic in his dialogue.
- Fake-Out Fade-Out: The conclusion seems to end once his heart meter breaks, and Strapping has no rebuttal to being accused of murder. But then the scene quickly transitions back to the interrogation room when he yells "Encore!" and he has a partially filled heart meter.
- Jerkass
- Red Herring: He's set up as the murderer for much of the case, and though he did frame Clegg for the killing, he didn't technically murder anyone.
Destiny Knox
The supporting actress for the play.- Dub Name Change: From Adele Powers.
- Karma Houdini: By the looks of the credits, she doesn't get punished for lying about hearing Blaise scream.
- Punny Name: Destiny knocks (on your door).
Bray Clegg
A stagehand of the play.- Ascended Fanboy: Went from stagehand to an actor as seen in the credits.
- Dub Name Change: From Tony Baclero.
- Framing the Guilty Party: Strapping knocked him out to frame him, since he genuinely thought he switched the guns. He was wrong.
- Punny Name: 'Break a leg', which is an idiom typically used in theater to wish someone good luck. Also possibly punning a kleig lighting on a stage.
Doug Scowers
Dustin Scowers's older brother and a student of O'Logie.- Punny Name: Dig (and) scour. Another meaning of "scour" (apart from the one used for his brother) is to "seek" or "search", and he's an archaeologist.
Micah Sasucasa
A hotel owner.- Bilingual Bonus: If you know Spanish, then try to say his name out loud.
- Dub Name Change: From Alvaro Lagos.
Mariana Etista
A young woman working as a hotel employee. Actually a fake identity used by Diane Makepeace.- Bitch in Sheep's Clothing
- Dub Name Change: From Fana Castilla.
Chico Careta
A local of a village who volunteered to be a local guide for the archaeologists.- Color-Coded Emotions: He emotes through various colored masks. Red for Anger, Blue for Sadness/Nervousness, and Green for Joy/Laughter.
- Dub Name Change: From Nico Eleira.
- Eloquent in My Native Tongue: Not only is his English broken and peppered with Spanish words, but he is also unable to read or write English as well. Justified in that he has only been learning English from Mariana for the past six months and is still learning.
- El Spanish "-o"
- Karma Houdini: Apparently, he gets released, even though he killed O'Logie, because he was being manipulated by Mariana. In the credits, he's shown to be happily rolling a cart with a stone statue to the village, which surprises the villagers and Sasucasa.
- Love Martyr: He recognized Mariana's voice coming from the statue, which implies that he knew he was killing on her behalf, and not on that of a demon.
- Meaningful Name: In his mother tongue, "chico careta" translates to "mask boy", which is more or less half of his character gimmick.
Dolly Hollerday
A famous singer and a guest in Dread's show.- Dub Name Change: From Abby Marjoram.
- Giftedly Bad: She sees herself as a great singer, but her profile claims she's horrible.
- Ms. Fanservice: Her profile says she's able to distract from her bad singing by acting sexy onstage.
- The Ditz
- Red Herring: Initially, not knowing much about the case, Alfendi supposes on a less-than-50%-chance she's the killer.
- Shipper on Deck: For Lucy and Alfendi, it seems.
Melody Smith
A talent agent who became Hollerday's manager.- Dub Name Change: From Patsy Lemonetta.
Mike de Bonair
The friendly director of the radio show.- Bitch in Sheep's Clothing: You see his true colours during the interrogation. He doesn't even know the name of the other co-worker he tricked and killed.
- Deadpan Snarker: During his interrogation, he will make snide comments about the Metro's efficiency.
- Dub Name Change: From Danny Isaac.
- Great Escape: Seems to be discussing ways to escape prison with Carrière in the credits.
- I Never Said It Was Poison: He accidentally revealed that the container in which the poison was stored was a perfume bottle, when it had been shattered by Brewer after the murderer had been done with her.
- Ironic Echo: Repeatedly gets Alfendi's name wrong and then objects when Alfendi purposely messes up his name after he's exposed as the murderer.
- Meaningful Name: "de Bonair" equals "debonair".
- Smug Snake: Especially in the final part of his interrogation.
Randal Mann
The sound technician of the radio show. Used to be a musician.- Ambiguously Gay: He's stated in his profile to have flirted with Dwight before, and after calling emergency services once Dwight had collapsed, he hung around with a security guard he described as "just my type".
- Wholesome Crossdresser: Randal enjoys crossdressing and wearing high heels, and it isn't presented as a negative thing.
Uttar Mistry
The delivery boy of a Dale Herl's Deli, a delicatessen.- Blush Sticker: When he fanboys about the second-in-command mafia murderer and victim.
- Children Are Innocent: When Alfendi tells Lucy he is 100% certain Mistry is not the culprit, Lucy accuses him of thinking that because he's only a kid.
- Oop North: Seems to have a Merseyside/Liverpool accent - judging by his pronunciation, using Scouse slang such as "bizzies", and the setting of the crime being "Merseyshore".
- Loony Fan: For someone who was worried about being killed by the mafia agent, he seems to be a big fan of him. He happily recounts Sassina's killing his fellow members in the credits.
- Punny Name: "Utter mystery". Not like you needed to ask.
- Spanner in the Works: If he hadn't been at the scene and inadvertently blocked one of Sassina's paths to escape, Diane would have had the opportunity to arrange the whole crime scene, since Sassina would have died anyway but not have locked himself up in the building.
Diane Makepeace
The daughter of Keelan Makepeace.- Affably Evil: Lampshaded by Lucy in Case 9.
- Avenging the Villain: Her acts against Layton are to avenge her father's death
- Bait-and-Switch Boss: Despite being the main villain of Cases 4, 6, 7, and 8 which build her up to be the final villain, she's killed offscreen at the start of Case 9 and confrontation against the final boss of the game is to uncover her killer.
- Cute and Psycho: Although she's a sadistic villain with a keen desire for crime, her general appearance still gives her the look of an adorable girl.
- Daddy's Little Villain: Of Keelan Makepeace. The end credits show her and her father taking a picture of themselves robbing the vault of a rich victim Keelan just killed.
- Dub Name Change: From Sophie Kincaid.
- Elegant Gothic Lolita: Played even more straight since she is an adult.
- The Killer Becomes the Killed: By the same way her father died, no less. Justin couldn't tell what Keelan told her, so she was Killed to Uphold the Masquerade.
- Little Miss Badass: Lampshaded in her profile that despite her innocent appearance, she has international notoriety.
- Master of Disguise: She can disguise herself as Mariana with ease.
- Older Than They Look: She certainly looks far younger than her listed age of 21.
- Perky Goth: This adds to her general creepiness.
- Punny Name: Die and make peace.
- Revenge Before Reason
- Serial Killer
- Soft-Spoken Sadist
- You Killed My Father: She wants revenge against Alfendi Layton for killing her father.
Cat
The wife of Pig.- Gold Digger: Although her profile states that she wants to claim the life insurance policy on Pig, she insists she isn't one as she wouldn't get the money Pig passed down to her. She's not the killer.
- The Unfought: It's entirely possible to play through the whole case and not interrogate her.
Hen
The housekeeper for Pig's mansion. She found her master dead but decided not to report it and instead stole money from his wallet.- But Thou Must!: Lucy will autonomously frame Hen when first contacting Diane, forcing the player to prove why she can't be the murderer.
- Red Herring: Her fingerprints on her wallet and her being increasingly annoyed by her master give her a rather plausible motive to kill, but the worst she is is a thief.
Dog
A trader who had borrowed money from Pig and so had to meet with Pig about his debt. His true identity is Keelan Makepeace, the infamous serial killer behind the Jigsaw Puzzle Killings.- Hide the Evidence: The two pictures of him entering and leaving the room before Donkey arrives are the vital evidence to show that he had the opportunity to kill Pig. But in the actual investigation years ago, Keelan had those pictures hidden with help from Justin, so it was thus impossible to determine who the killer was.
Donkey
A shady jeweller who was supposed to meet with Pig about him knowing about the merchant's fraudulent practices.- The Unfought: You never need to question Donkey, since he's innocent.