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[[quoteright:316:[[ComicStrip/WhatsNewWithPhilAndDixie http://static.tvtropes.org/pmwiki/pub/images/cleanerNearn_6877.jpg]]]]

->'''Arthax:''' That was... Demeaning.\\
'''Yeagar:''' I never knew you could [[StormingTheCastle storm a castle]] like ''this''...\\
'''Webcomic/{{Nodwick}}:''' The thieves' guild would be unstoppable if they invested in blue coveralls with the name "Al" embroidered on them.
-->-- ''[[http://comic.nodwick.com/?comic=2001-10-24 Nodwick]]''

OK, so you have to [[TheInfiltration break into]] this high tech science lab, or a government facility, or a fancy bank, or ''something''. It doesn't really matter what this place is to you, because it's swarming with security and there's no way you'll ever get in... or is there?

Enter the Janitor Impersonation Infiltration. Custodians, janitors, cleaning ladies, what do these people have in common? They have access to every room in the building and [[BeneathNotice might as well be part of the scenery]]. [[RightUnderTheirNoses No one pays attention to them]] or wonders what they are doing sneaking around after hours while everyone else in the building is gone. So if you are looking for an easy-in, they are perfect candidates for impersonating when one has to steal that secret formula or those hidden financial records.

[[Administrivia/TropesAreFlexible Other similar jobs]] which have the same relative anonymity of the janitor and are BeneathNotice may also qualify for this trope. Being that these people might be secret agents (and by proxy a MasterOfDisguise), there's a definite possibility of AlmightyJanitor overlap. Compare DressingAsTheEnemy, TheInfiltration, RoomDisservice and DeliveryGuyInfiltration. Depending on what is done with the real janitor, may overlap with MuggedForDisguise, and you might want to be careful about running afoul of ConfrontingYourImposter. If the impersonator seems to do this often in different situations, it might be a case of NewJobAsThePlotDemands. May overlap with BlackTieInfiltration if infiltrating a party as the hired help.


[[folder:Anime and Manga]]
* Spike from ''Anime/CowboyBebop'' infiltrates a government facility as a Janitor in ''Cowboy Bebop The Movie''. Unfortunately his guise doesn't fool the resident ActionGirl.
* An episode of ''Anime/{{Madlax}}'' has the title character posing as a cleaning lady in order to infiltrate an enemy base. The real cleaning lady is briefly glimpsed taped up and gagged in a supply closet.
* Textbook example in ''Anime/DarkerThanBlack'' when Hei needs to infiltrate a science facility and gets a job as a janitor to do so.
* In ''Anime/MagicalGirlLyricalNanohaStrikers'', [[QuirkyMinibossSquad Numbers Cyborg]] Due disguised herself as [[spoiler: a member of [[BrainInAJar their]] maintenance crew]] to successfully assassinate [[spoiler:the founders of the [[TheFederation Time-Space Administration Bureau]]]]. Having [[VoluntaryShapeshifting shapeshifting abilities]] helped.
* In ''Anime/MegamanNTWarrior'', Ms. Madd infiltrates in this manner so that she and Mr. Match can compete again in the N1 Grand Prix.
* In ''Anime/YuGiOh5Ds'', Carly infiltrated the Arcadia Movement building by pretending to be a janitor. Divine stopped her and pointed out she was not the usual janitor, but she claimed he was sick.
* In ''Anime/BloodPlus'', the Red Shield must dispatch a chiropteran that has appeared around a Vietnamese all-girls' boarding school while being covert about it, partially because they're able to pose as normal humans. To do this, Saya, the only member of the team who is able to kill the chiropteran, poses as a student, while her bodyguard Hagi poses as the school gardener (only to mostly fail at not attracting attention due to his [[{{Bishonen}} good looks]]).
* In the ''Anime/TenchiUniverse'' film, ''Tenchi Muyo! in Love'', this is the disguise Kiyone does when she and the other older girls infiltrate Achika's school to protect her.
* In ''{{Manga/Ajin}}'', Satou's accomplices infiltrate the headquarters of Grant Pharmaceutical posing as the "Clean Fox Service".

[[folder:Comic Books]]
* Chameleon does this in the very first issue of ''[[ComicBook/SpiderMan The Amazing Spider-Man]]'', leaving the real janitor bound and gagged in a closet.
* Used in an issue of ''Comicbook/{{Catwoman}}'' when Selina infiltrates a police station. One cop even mentions that the cleaning lady is supposed to have the day off, but doesn't pursue the inconsistency beyond that.
** She did the same thing in another issue by posing as a maintenance worker. She lured the real maintenance worker to an apartment, where she left him BoundAndGagged in a closet after stealing his uniform and van.
* Taking a leaf from Radio/TheShadow's book (see below), the Franchise/{{Batman}} has also masqueraded as the janitor at police headquarters. Sometimes his disguise amounts to a mop and overalls, a hat and a fake beard [[PaperThinDisguise over his Batman costume]].
* In ''ComicBook/{{Huntress}}'' #5 (the 2012 mini-series), Helena disguises herself as a cleaning woman to sneak into the Lion's fortress.
* Scarlett attempts it in the NoDialogueEpisode "Hush Job" in ''Franchise/GIJoe Yearbook'' #3. In an attempt to rescue Snake-Eyes, she sneaks into Cobra HQ disguised as a cleaning woman, with Snake-Eyes' wolf Timber hidden inside a canister vacuum cleaning. However, the Cobra sensors pick up the huge amount of weaponry she is carrying and she is exposed.
* ''ComicBook/XXXenophile'': In "R.U.R. or Are You Ain't My Baby?", a female spy disguises herself as a cleaning woman to infiltrate a robotics lab and destroy the prototype robot being developed. ([[OutWithABang By sexing it to death.]])
* When she crossed over with ComicBook/{{Flare}}, Lana the spy posed as a maid so she could get the drop on J. Reginald Butte, who had invited Flare to his party.

[[folder:Fan Works]]
* In Destiny's Pawn (an adaptation of ''KnightsOftheOldRepublic''), the party uses various tricks to break into the Manaan Sith embassy. Kairi (Revan), Bastila, and Juhani go in by the front door, Canderous and Carth pass themselves off as a mercenary team. Jolee, Mission, and T3-M4 use this route since Sith are not known for being nice to the help nor paying them much attention.

* In ''Film/{{Zoolander}}'', Derek and Hansel try to steal proof that Mugatu is trying to have Derek assassinate the Malaysian Prime Minister by dressing up as Janitors. They dubbed the character voices onto completely different actors because Derek's makeup skills are just that amazing.
* In ''Film/X2XMenUnited'', Mystique shapeshifts into a janitor to get into and out of a government facility with information on Magneto's prison guards. She employs Obfuscating Spanish when challenged. "Estoy echando la basura. ''Garbage.''" It leads to an amusing scene where she walks by the ''actual'' janitor, who's dumbfounded to see himself walking by (and is also an example of MakingUseOfTheTwin).
* Simon Templar does it in ''Film/TheSaint1997'', seeking into the BigBad's office disguised as a cleaning lady.
* In ''Film/FistOfFury'', Creator/BruceLee's character, Chen, disguises himself as a telephone repairman to infiltrate the Japanese karate school.
* ''Film/TheFugitive'' (1993). Kimble dresses as a janitor to get into a hospital and use its computer system to locate the One Armed Man. Gerard lampshades it when he sees the phony ID card:
-->''[with accent]'' "Desmondo, Jose Ruiz?"
* ''Film/{{Sneakers}}''. Karl dresses as a gardener to get inside the Playtronics building by pretending to need to use their bathroom.
* Used twice in ''Film/UndercoverBrother''.
** At the beginning the title character dresses as a janitor (complete with LatexPerfection mask) to infiltrate a bank.
** The B.R.O.T.H.E.R.H.O.O.D. agents pose as the Island Fortress Cleaning Service to infiltrate The Man's island base.
* In ''Film/{{Machete}}'', Machete shows up at the BigBad's mansion with gardening tools, and the guards just let him in.
* Horace and Jasper try this in Disney's ''Disney/OneHundredAndOneDalmatians'', as electric repairmen. It doesn't fool the nanny, so they just barge their way in.
* Happens twice in ''Film/TheDarkKnightRises'':
** Selina Kyle disguises herself as a maid to steal Bruce's mother's pearls.
** One of Bane's henchmen poses as a janitor to sneak a submachine gun into the stock exchange, stashed in his water bucket.
* In ''Film/DieHard2'', two of Colonel Stuart's men, Baker and Thompson, don utility workers' uniforms so they can get into the church and kill its custodian.
* In ''Film/TheScore'', Jack gets a job on the Customs House cleaning crew in order to scope out the target.
* Creator/AudreyHepburn's character in ''Film/HowToStealAMillion'' sneaks out of the museum disguised as a cleaning woman.
* Also done in ''[[Film/TheFastAndTheFurious Fast Five]]'', when Leo & Santos pose as janitors in order to reconnoiter the police station with their mark.
* In ''Film/TheThieves'', [[spoiler:Macau Park]] disguises himself as an elderly waiter so he can have access to various areas of the casino.
* In ''Film/IRememberMama'', the hospital staff is so strict that a child's mother isn't even allowed to see her daughter after visiting hours. So she comes back after shift change, goes to the mop closet, brings out a bucket of water and a sponge, and on her hands and knees, proceeds to scrub her way to the ward where her daughter is staying. Needless to say, every nurse there who sees her only notices some woman scrubbing the floor, and presumes it's the cleaning lady.
* In ''Film/{{Taxi}}'', one of the baddies disguises as a janitor to collect the robbed money at the race track.
* In ''Film/{{Speed}}'', Howard Payne pretends to be an elevator repairman in order to gain access to the basement of an office building so he can screw around with the elevator controls. His cover is blown when a staff member walks in and catches him, and so he decides MurderIsTheBestSolution and kills the guy with a screwdriver.
* In ''Film/{{Cobra}}'', the Night Slasher does this in order to gain entry into the hospital where Ingrid is, murdering a hapless janitor and [[MuggedForDisguise stealing his clothes]].

* Common in ''Literature/{{Discworld}}''. Especially popular with the history monks, one of whom actually is an AlmightyJanitor.
** An especially interesting example in ''Discworld/MonstrousRegiment'', where Polly's regiment have to disguise themselves as washerwomen [[spoiler: without revealing they're all really women.]] They are all unconvincing as females, including Polly.
* In ''Literature/DragonBlood'', the cleaning team of the king's asylum (where the king's younger brother is imprisoned) is headed by a man who once was that prince's loyal servant. He uses his position to bring allies (i.e. rebels) to see the prince. This has been going on for about ten years, and no one noticed, as no one would investigate the background of someone who is just there to clean floors.
* Aralorn of ''Literature/{{Masques}}'' is a spy, and this is one of her favourite methods. However, when she replaces a ''slave'' that doesn't work so smoothly. (It wasn't intended in the first place, she just did it out of pity; usually she'd have tried to get in as cleaning lady or such.)
* ''Literature/{{Otherland}}'': Olga Pirovsky infiltrates the tower of the J-Corporation disguised as a cleaning lady.
* In ''Literature/HarryPotterAndTheDeathlyHallows'', when the Trio infiltrate the Ministry of Magic, Ron disguises himself as Reg Cattermole, a lowly magical janitor.
* Happens frequently as part of the {{Zany Scheme}}s in the works of Creator/PGWodehouse. In ''Something Fresh'', the first novel set at Literature/BlandingsCastle, hero Ashe Marson and heroine Joan Valentine are on opposing missions to steal a prized scarab and disguise themselves as a valet and a ladies' maid, respectively.
* In the ''[[Literature/TheLaundrySeries Laundry Files]]'' novel ''The Fuller Memorandum'', avoiding this sort of infiltration is one of the reasons that the Laundry cannot outsource their LAN rewiring, with the other reason being that having people unaware of the {{Masquerade}} build the system that you are going to use to fight {{Eldritch Abomination}}s is a very bad idea. Ironically, the person that Bob explains this to turns out to be TheMole. Bob uses the trick himself in The Rhesus Chart to investigate an investment bank, [[spoiler:but he gets made almost instantly]]
* Harry Dresden in ''Literature/FoolMoon'' disguises himself as a janitor to get into the SI station where a ready-to-transform werewolf is being held under arrest. It helps that he has a sort of cheap invisibility potion that lets him pass [[BeneathNotice beneath everyone's notice.]]
* In ''Literature/BloodFever'', [[Literature/YoungBond young James Bond]] manages to get into Count Carnifex's inner sanctum to eavesdrop on his grand plan by picking up a tray, and pretending to be one of his servants.
* In ''Literature/SoonIWillBeInvincible'', this is how Doctor Impossible gets into the Chanpion's HQ to get one of the artifacts he needs for his plans.
* ''Literature/JoePickett'': In ''Endangered'', Timber Cates poses as a janitor to infiltrate a hospital in order to perform a SickbedSlaying on April Pickett. He wears his old scrubs from the prison infirmary and his old prison ID round his neck, knowing that no one will look too closely at them.
* ''Literature/NickVelvet'': In "The Theft of the Used Teabag", Nick dresses as a busboy to gain access to the kitchen and dining room of the club in order to steal the teabag.
* In ''Literature/TheInvisibleLibrary'', Irene does not disguise as the cleaning lady, but applies for a job as cleaning lady and works in the building for weeks, spying out the location of the book she wants to steal. At the time when she steals it, the school staff already know her as the cleaning lady and are not very suspicious when she says that the thief escaped through a window.

[[folder:Live Action TV]]
* ''Series/TheBradyBunch'': Season 3's "Getting Davy Jones" sees Greg and Marcia disguise themselves as bus staff to get into the ex-Monkee's posh hotel room and eventually determine where he's staying.
* ''Series/DoctorWho'':
** The Doctor [[DisguisedInDrag disguises himself as a cleaning lady]] while sneaking around the villain's compound in the ''Series/DoctorWho'' serial [[Recap/DoctorWhoS10E5TheGreenDeath "The Green Death"]].
** In [[Recap/DoctorWhoS13E6TheSeedsOfDoom "The Seeds of Doom"]], the Fourth Doctor disguises himself as a chauffeur to sneak into a mansion, an odd moment since his usual bluffing tactic is [[BavarianFireDrill being commanding]] and [[TheCharmer having charisma for miles]]. It convinces no-one - perhaps because of this, or perhaps because he was clearly still wearing his scarf under his coat.
** In [[Recap/DoctorWhoS14E3TheDeadlyAssassin "The Deadly Assassin"]], the Fourth Doctor disguises himself as a dressing room assistant to appear invisible while he steals himself a disguise, using only [[MasterActor voice pitch and body language]] as he was dressed only in his underwear at the time. Notably, the two Time Lords who are the focus of the scene don't even seem entirely sure that there was another person there at all.
** In [[Recap/DoctorWhoS28E5RiseOfTheCybermen "Rise of the Cybermen"]], the Doctor and Rose disguise themselves as waiters to crash a party.
** In "The Caretaker", the Twelfth Doctor gets himself employed as a caretaker at Coal Hill School to fight a KillerRobot.
** In "The Return of Doctor Mysterio", Lucy Fletcher disguises herself as a cleaning woman to sneak around Harmony Shoal.
* On ''Series/BurnNotice'' Michael decided to pretend to be a weekend janitor so he could steal some high tech access codes. When that only got him so far, he added a drunken WoundedGazelleGambit to do the rest.
* On ''Series/SavedByTheBell'', Screech dresses as a female janitor to get into the girls' locker room.
* Daisy from ''Series/DeadLikeMe'' once dressed as a cleaning lady to reap someone in their hotel room.
* ''Mr & Mrs Smith'' (1996). In the pilot episode, Mr. Smith (Scott Bakula) dresses up as a janitor to infiltrate a target installation and acquire information.
* ''Series/HumanTarget'': a group of bad guys infiltrate a museum dressed as maintenance staff, with Chance and Ames among them.
* The title character in ''Series/{{Chuck}}'' has on more than one occasion gotten by security by pretending that someone has called the Nerd Herd to fix a computer problem.
* In ''Series/{{CSI}}'', the Miniature Killer [[spoiler:takes this a step further by actually getting a job as a janitor in the lab]].
* ''Series/{{CSINY}}'' had an episode where Flack dressed as a parks department employee as part of a group setup to catch a suspect.
* The killer in the ''Series/CriminalMinds'' episode "Poison" planned on fatally poisoning everyone at his old workplace, which he snuck into disguised as a maintenance worker.
* ''Series/{{Hustle}}''
** In "Eye of the Beholder", Ash gets a job on the cleaning crew at the museum so he can scope the place out as part of the team's plan to steal the Crown Jewels.
** And Emma does it in "Eat Yourself Slender".
* Rain does this in an episode of ''Series/NaturallySadie'' to get proof that a famous designer is stealing Margaret's designs.
* The ''Series/{{Leverage}}'' crew does this all the time
** Usually it's Eliot posing as a janitor, but Hardison and Parker have done it as well.
** In "The Last Dam Job" [[spoiler:Archie, Parker's mentor and]] a master thief infiltrates a black tie event with this and BlackTieInfiltration. As an elderly, but sophisticated-looking gentleman, he walks past security pushing a cake as though he is part of the catering staff. Once in the elevator, he puts on his suit and walks around with his cane like a true gentlemen. And once he's done, leaves as a caterer once more.
* Bodie on ''Series/TheWire'' does a Janitor Impersonation ''Exit'' from a juvenile detention facility.
* A standard tactic on the ''Series/MissionImpossible'' television series. Commonly, one of the IMF members would get into the target's location, then fake some sort of utility outage. Other members of the team would then pose as repairmen or technicians arriving to fix the problem.
* In the original ''Series/KnightRider'', Michael Knight has to infiltrate an army base, so he bribes a food service worker to let him have his job for the day. The man says for double the money, Michael can be his cousin as well. This comes in handy when Michael gets detained, but the original guy verifies that Michael is indeed his cousin who was filling in for the day.
* A favorite tactic of Frohike on ''Series/TheXFiles'', when he's not computer-hacking. The other Lone Gunmen, it seems, are less proficient at this infiltration tactic.
* Used regularly in ''Series/PersonOfInterest'', as posing as a of low-level employee is Finch's preferred method of getting into places unnoticed, usually as some sort of 'IT guy', engineer or the like.
* On ''Series/{{Extant}}'' Molly is caught snooping around at a murder scene and pretends to be an employee of a company that cleans up murder scenes. It does not work because the person who caught her knows that the murder occurred just the day before and the crime scene would not be released to the cleaning company for at least a week.
* ''Series/FatherBrown'': In "The Owl of Minerva", Sullivan and Sid pose as window washers in order to break into the police station.
* On ''Series/OneLifeToLive'', Blair and beau Max break into her ex-husband Todd's newspaper office disguised as janitors in order to steal files. Todd spots them as they're leaving and is unconcerned, but does a DoubleTake at the high-heeled shoes that the "maid" is wearing. The next day, he goes to Blair's apartment for a visit with their daughter. . .and she's wearing the same shoes.
* ''Series/{{Supernatural}}''
** Although Sam and Dean usually pose as FBI agents, in one episode they get into a crime scene by pretending to be maintenance guys there to figure why the alarm system didn't go off.
** In a season nine episode, they go undercover at a weight loss clinic. Sam is able to teach yoga, but Dean ends up an errand boy in the kitchen.
* ''Series/BetterCallSaul'': Jimmy and Kim hire Mike to pose as a repairman hired to fix Chuck's door. Mike uses a battery-powered drill to scare the electromagnetically-sensitive Chuck upstairs while Mike secretly takes photographs of the house highlighting Chuck's state of mental being.

[[folder:Radio Drama]]
* Radio/TheShadow used to maintain a cover identity as Fritz, the janitor at police HQ, that allowed him to snoop about in the police files to his heart's content.

* An old classic in ''TabletopGame/{{Shadowrun}}''. By the 2070s, most corps have become wise to it by [[BigBrotherIsWatchingYou reading the public SIN]] of anyone who enters the premises off-hours, requiring you to either KillAndReplace the regular janitor or have your decker hack the security.

[[folder:Video Games]]
* ''VideoGame/{{Prototype}}'': Alex Mercer. Canonically he only does this - literally consuming and assuming the form of a janitor - once, and hates himself for it.
* One of the missions in ''VideoGame/MafiaII'' has you enter a mafia controlled hotel that is having a meeting of the head of a rival family but dressing up as cleaners. They clean up the blood of some unfortunate person while planting bombs.
* In ''VideoGame/NancyDrew: The White Wolf of Icicle Creek'', Nancy Drew acts as the lodge's new cook and maid in order to investigate the lodge guests.
* Roger Wilco in ''VideoGame/SpaceQuest III'' infiltrates Scum Soft by posing as the janitor. Since he [[AlmightyJanitor really is a janitor]], it shouldn't be too hard, but he can still blow it and get [[HaveANiceDeath killed by security]].
* Used twice in the "Dead Man's Switch" campaign of ''VideoGame/ShadowrunReturns''. The second time it happens, the player is maintaining the guise of cleaning up his or her, uh, mess (several gallons of security guard blood) from the night before. The "Hong Kong" campaign has one manager notice and lampshade your use of this trope, calling it "classy" before offering to cut you a deal.
* The Bureau Raid mission ''VideoGame/GrandTheftAutoV'' has Michael infiltrating the FIB headquarters as a janitor if you chose the Covert option.
* In the first ''VideoGame/MegaManBattleNetwork'' game, Mr. Match infiltrates and sabotages a number of houses, including Lan's, by posing as a repairman sent to do preventative maintenance in light of the recent attacks. You know, ''his own''.
* Agent 47 tends to do this a ''lot'' in ''VideoGame/{{Hitman}}'', though exactly how often is at the discretion of the player. Sometimes they leave extra uniforms lying out, and sometimes you have to kill them.
* Played with in [[VideoGame/MetalGearSolid3 the third Metal Gear Solid game]]. At one point toward the end of the game Snake needs to do this to get access to the Shagohad and plant a series of bombs in the hangar. Sure enough, the soldiers don't notice, but if any of the other other techs/janitors see you, they'll know that you're not one of them and sound the alarm.

* This ''ComicStrip/WhatsNewWithPhilAndDixie'' [[http://www.airshipentertainment.com/growf/growfcomic/strips/growf_20070520.jpg strip from Dragon Magazine #63]] has a guy dressed as a cleaning woman sneaking into a computer lab.
* In the "Reality Television" arc of ''Webcomic/SchlockMercenary'', Lieutenant Ebniroth actually gets hired as a janitor for the building he's meant to infiltrate. Since they don't know the mercenaries are after them, he doesn't have to disguise his identity at all, even bragging about how his service qualifies him for the job.

[[folder:Western Animation]]
* ''WesternAnimation/KimPossible'' had an episode with a government agent mentor who turned up as the janitor. Kim didn't want anything to do with him because she thought he was just the janitor. He thought she always knew what he really was because he never expected his {{Canad|aEh}}ian secret agent uniform to be mistaken for a janitor uniform. He even had to explain he wasn't wearing a disguise.
* In the ''WesternAnimation/{{Centurions}}'' episode "Max Ray... Traitor", the main villain had infiltrated the installation as a janitor. He also revealed that ''every janitor in the installation'' was part of his conspiracy.
* ''WesternAnimation/TheSimpsons'': In one opening, they had to break into a museum to reach their couch. They wore several disguises through the way and one of them was janitor.
* This is pretty much the modus operandi of WesternAnimation/HongKongPhooey. He's really police station janitor Penrod Pooch ("Penry" for short) who listens for crimes in progress from switchboard operator Rosemary before launching into action as the title hero.
* In an episode of ''WesternAnimation/TimonAndPumbaa'', the duo try to sneak into a talent show. Pumbaa technically disguises himself as an ''electrician'', but gets called out on it for carrying a mop. He explains that a light bulb broke and he has to clean up the electricity that is spilled all over the floor now. The guard buys it and lets him in.
* In the ''WesternAnimation/SWATKats'' episode "Destructive Nature," Dr. Viper infiltrates the Megakat Tower disguised as a gardener, and the "water" he's pouring on the potted plants is actually a mutagenic growth formula which causes them to turn into vicious monsters.