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[[quoteright:350:[[ComicBook/SinCity https://static.tvtropes.org/pmwiki/pub/images/weevil.jpg]]]]
[[caption-width-right:350:What's lower than a rat? A ''weevil''!]]

There's a [[TheSyndicate new syndicate]] in town, and they've kidnapped hostages. The heroes [[RaceAgainstTheClock have been given twenty-four hours]] by DaChief to bust them - but they don't have any leads.

Better go see The Rat.

The Rat is an informant who always has the information, and he's willing to give it to the heroes, for a price - whether it's money, the expectation of future favours, or even just the heroes' blind eye to his shady dealings. In the criminal underbelly, he's usually a low-level bottom-feeder at best, and is often a bit of a slimy, whiny creep, but he has his finger on the pulse and every scrap of information about what's going down comes through him, and he saves it for exactly when it'll come in useful for him. He's often a pawnbroker (read: [[BlackMarket fence for stolen goods]]) or a bartender in a dive bar, or some other such profession which often features some kind of contact with criminals. In older works, he may be a StreetUrchin of some kind. Usually lives in TheCityNarrows.

He usually likes to treat the heroes' search for information as a bit of a game; a request whether he knows what's going on will be met with a faux-innocent "I know lots of things," until someone ponies up the motivation to get him to talk. If the heroes are in the mood to play along, then this will be a wad of currency; if not, they may just decide to [[JackBauerInterrogationTechnique bounce him off the walls until he squeals]].

As such, he can be a bit of a punching bag for the heroes, but beware - he can only be pushed so far. Whilst he's usually [[DirtyCoward a coward]] who wouldn't dare try anything with the heroes when they're on top, his loyalties are slippery, and if the villain gives him enough motivation he'll just as easily switch allegiance and sell out the heroes, thus prompting a possible TheDogBitesBack moment if the heroes push him too far. However, if and when the heroes get themselves back on top of the situation, The Rat will find himself with a lot of explaining - not to mention desperate pleading - to do.

The chances of The Rat betraying the heroes if someone makes him a better offer is near-certain, however, and all but the most [[GenreBlindness genre blind]] of heroes know this - nevertheless, they still persist in keeping him around. In-universe, this may be [[HandWave explained]] by the fact that he's just so useful as a source of information. Outside of the fiction, however, it's probably because he's a fan-favourite character.

A variation that sometimes appears (particularly in CyberPunk style stories) is the 'information broker' variety - a character who deals in trafficking information, usually of a sensitive or not-entirely-legal in a computerised format. Unlike the standard crime-novel Rat, the Information Broker may not be a criminal and may have a respectable above-board persona requiring that they conceal their more illicit activities. This type of character frequently appears as a protagonist.

Compare with the MysteriousInformant (an anonymous Deep Throat-like source who appears to give the protagonists some cryptic, fragmentary information before disappearing) and the KnowledgeBroker (a source with a network of further information sources supplying all the information needed). Not to be confused with [[YouDirtyRat an actual rat]], though of course in anthropomorphic settings of all kinds it's entirely possible for the two to overlap. Also not to be confused with TheLabRat, which is someone else differently.

If the rat spills their info to the police instead of the heroes, then they're TheStoolPigeon.
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!!Examples:

[[foldercontrol]]

[[folder:Comic Books]]
* In some variations of the ''Franchise/{{Batman}}'' franchise, The Penguin has come to fill this role after going semi-legitimate with his owning a nightclub.
* ''ComicBook/SinCity'' has Weevil, mine of information and perennial ButtMonkey.
* [[PunnyName Nervous Rex]] fills this role in ''ComicBook/SinisterDexter'', right down to the massive coward bit. He is also, however, a good friend of the protagonists, to the extent of getting free (or heavily discounted) protection from them.
[[/folder]]

[[folder:Fan Works]]
* ''Fanfic/PokemonTheLostChild'': Greninja somehow managed to learn the location of Zoroark and tells Aegislash about it, which kicks off the events of Chapter 17. Aegislash is also suspicious of why they would give that info away for free.
[[/folder]]

[[folder:Film -- Live Action]]
* In ''Film/TheCarRoadToRevenge'', Rainer and Daria visit an information broker to gain info on The Night. However, [[HisNameIs just as the broker starts to talk, he is shot by Talen's gang]].
* The Rat in ''Film/TheCore'' is actually called 'Rat' and is an "information wants to be free" type. Which he uses as a TakeThat against the government in the final shots of the movie.
* Leo Getz in the ''Film/LethalWeapon'' series of movies is an unusually sympathetic version of this character; described by Riggs and Murtaugh as "an annoying asshole with a lot of connections," he's a bit annoying but essentially a decent guy who actually seems to look up to Riggs and Murtaugh a bit, however badly they treat him. In the later movies, the three become friends, something of a PowerTrio, and Leo ends up acting as Murtaugh's estate agent in ''Film/LethalWeapon3''.
* A rare Sci Fi version in ''Film/MenInBlack'' and ''Film/MenInBlackII''. Jack Jeebs is an alien who sells stolen fake rolexes and some powerful alien tech who Jay and Kay harass and threaten to get info and tech.
* In ''Film/OsmosisJones'', a Flu Shot virus serves this role.
%%* Mr. Universe from ''Film/{{Serenity}}''.
[[/folder]]

[[folder:Literature]]
* One of Creator/RobertAsprin's novels (possibly ''Cold Cash Wars'') featured a character like this.
* The ''Literature/HarryPotter'' series of books has Mundungus Fletcher, a selfish thief and con artist who is sometimes antagonistic towards Harry and his friends. Despite being a total crook he remains loyal to Dumbledore and is thus useful to the protagonists due to his knowledge of the criminal world.
* ''Literature/{{Discworld}}'': In ''Literature/{{Night Watch|Discworld}}'', a young Nobby Nobbs is a StreetUrchin who serves as an informant for Vimes/Keel while he's stranded in the past.
* The Finn in William Gibson's ''Literature/{{Neuromancer}}'' is compared to a rat by the main characters, and more or less fits the job description.
* Bobby Lacey in Katharine Kerr's ''Polar City Blues'' is the information broker type - her only other criminal activity is water hoarding to support her garden, which gives her fresh greens and apple cider to trade for more information.
* In Creator/RobertEHoward's Literature/ConanTheBarbarian story "Literature/RoguesInTheHouse", the priest of Anu who betrayed Conan at the beginning of the story.
* Hiro Protagonist and Y. T. in Neal Stephenson's ''Literature/SnowCrash'', who make their living trading "intel" (usually stolen computer code).
* ''Literature/SwordArtOnline'' has "Argo the Rat", who sells information to other players during the Aincrad arc (while a relatively minor character in the main story, she's fleshed out a bit more in the ''Progressive'' novels). Argo even [[InvokedTrope paints whiskers on her face to more resemble a rat]] - she claims that this started back in the beta when she got stuck on a quest that marks the player's face until completed, but she liked the impact it made on customers and now [[InvokedTrope uses it as her calling card]].
* Nick the Nose, an informant in the ''Literature/TwoMinuteMysteries'' stories starring Dr. Haledjian. In the stories, he always lies about knowing things in order to get a reward.
[[/folder]]

[[folder:Live-Action Television]]
* Willy the Snitch from ''Series/BuffyTheVampireSlayer''.
** ''Series/{{Angel}}'' also had a sewer-dwelling demon on whom Angel frequently used to pound in order to get information.
* Fosnight from ''Series/TheFlash1990'' TV series, who was a a con artist and secretly a police informant
%% ** Also several other characters played by Creator/DickMiller (who played Fosnight).
* ''Series/HillStreetBlues'' had Sid the Snitch, whose many minor scams were overlooked by Detective Buntz. On the other hand, Sid was such a braggart that many of the things he described may just have been his own fantasies.
* Bobby Bigmouth in ''Series/LoisAndClark'' was the reporters' main source on what was happening on the streets. A BigEater, he would tell them pretty much anything [[FoodAsBribe in return for food]].
* Parodied in ''Series/PoliceSquad''--Johnny the shoeshine guy acts in this role to Frank Drebin. However, as soon as Drebin's gone, someone from another profession entirely - a surgeon, a priest, Dick Clark - will show up, asking for information - and Johnny will go through the same act again, eventually giving them what they want as well.
** Similarly, in ''Film/TheNakedGun'', Johnny answers some questions after Frank Drebin greases his palm... then Johnny asks why the information is so important, and Drebin doesn't answer until Johnny pays ''him''. Drebin ends up leaving with the information he needed and an extra twenty bucks.
* Piggy from ''Series/PowerRangersSPD'': an occasional alien double agent, giving information to both the S.P.D. Rangers and Emperor Gruumm.
* Carl the Gnome from ''Series/SpecialUnit2''. Carl is he unit's liaison with the Link community, and is a verbally aggressive gnome known for kleptomania and armed robbery, who is mutually antagonistic towards Nick.
* ''All'' of Carmen Sandiego's {{Bumbling Sidekick}}s in ''Series/WhereInTheWorldIsCarmenSandiego''. As soon as they are jailed, they lose no time in squealing on Carmen to the winning Gumshoe. Bonus points for one of them (Wonder Rat) being a man who actually dresses like a rat.
[[/folder]]

[[folder:Video Games]]
* Birdie from ''VideoGame/HitmanAbsolution''. He is Agent 47's informant during 2013 and was hired by 47 himself in finding out more about the people after Victoria.
* Ugarte from ''VideoGame/QuestForGlory'' [[VideoGame/QuestForGloryII II]] and [[VideoGame/QuestForGloryV V]].
* Peg-leg Pete, the bartender at Ye Bitten Dog tavern, plays this role in ''VideoGame/ReturnToKrondor'' and its novelization ''[[Literature/TheRiftwarCycle Krondor: Tear of the Gods]]''.
* Hammer the Supplier from ''VideoGame/{{Xenogears}}'' is literally a rat and fits this trope to a T. [[spoiler:Complete with a FaceHeelTurn because he's tired of being cowardly and powerless and jealous of the main characters' strength.]]
[[/folder]]

[[folder:Western Animation]]
* Argit from the various ''WesternAnimation/{{Ben 10}}'' series. He used to run with Kevin in between the end of the original series and Alien Force (during which Kevin became a LovableRogue). Also looks like a literal anthropomorphic rat, due to him being an alien.
* Big Daddy Brotherson from ''WesternAnimation/KimPossible'', of the 'information brooker' type.
* Jimmy the Rat in ''WesternAnimation/KryptoTheSuperdog'' is Ace the Bathound's snitch, although one they're introduced, Krypto sometimes uses him as well. He's also, of course, a literal rat.
* Rattletrap from ''WesternAnimation/TransformersAnimated'', despite being an Autobot, is a little shady (even willing to sell an ID pass to a Decepticon). He's based on Rattrap from ''WesternAnimation/BeastWars'', making him a literal rat as well. As Captain Fanzone put it: ''"There's one in every town."''
[[/folder]]

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