The outrageous character who undermines all of a SitCom's attempts at verisimilitude (such as they are).

Often, the outrageous character(s) clearly has a key to the residence of the more central characters of the show, since they nearly always show up unannounced and never knock or ring the door bell (see DropInCharacter, YourDoorWasOpen and InadvertentEntranceCue).

The Wacky Guy may also be a WeirdnessMagnet, his own strangeness an attractor for other weirdness without being directly responsible for it.

Contrast DeadpanSnarker, although they can be combined. Compare FunPersonified, {{Cloudcuckoolander}}, TheDitz. May be behind the ZanyScheme.


* In LighterAndSofter ''Anime/NeonGenesisEvangelion'' fanfics, [[MagnificentBastard Gendo Ikari]] is frequently a combination of this and BunnyEarsLawyer.
* [[ThePrankster Socrates]] of ''Fanfic/CalvinAndHobbesTheSeries'' is this.

* Batty Koda from ''WesternAnimation/FernGully''.
* Mack in ''Film/SuperTroopers'', who pulls off the more outlandish shenanigans (impersonating a carjacker just to freak out some stoned teenagers, and volunteering to be the test subject for a bullet-proof jockstrap).

[[folder:Live Action TV]]
* Charlie from ''Series/ItsAlwaysSunnyInPhiladelphia.'' Dennis is occasionally this, but most if the time he is completely AxeCrazy.
* Lenny and Squiggy from ''Series/LaverneAndShirley''.
* Skippy or Nick from ''Series/FamilyTies''.
* Reverend Jim and [[FunnyForeigner Latka]] from ''Series/{{Taxi}}''.
* Klinger from ''Series/{{MASH}}''.
* Spencer Shay from ''Series/ICarly''.
* Sinjin van Cleef from''Series/{{Victorious}}''.
* Kramer from ''Series/{{Seinfeld}}''.
* Cody, then [[ReplacementScrappy Jean-Luc]], from ''Series/StepByStep''.
* Harry from ''Series/ThirdRockFromTheSun''.
* Jack from ''Series/WillAndGrace''.
* [[ExtravertedNerd Steve Urkel]] and Waldo from ''Series/FamilyMatters''.
* [[InsufferableGenius Sheldon]] from ''Series/TheBigBangTheory''.
* Kimmy Gibbler from ''Series/FullHouse''.
* Barney Stinson from ''Series/HowIMetYourMother'', with a heaping help of {{Jerkass}}, and a handful of DeadpanSnarker.
** Note that due to an UnreliableNarrator, what we see might well be an UpToEleven version of the actual for every other character, though this is less blatant.
* Beans from ''Series/EvenStevens''.
* Alistair from ''Series/AsTimeGoesBy''.
* [[HavingAGayOldTime Boner]] from ''Series/GrowingPains''.
* Jazz from ''Series/TheFreshPrinceOfBelAir''.
* Eric from ''Series/BoyMeetsWorld'' became this after he TookALevelInDumbass.
* On ''Series/SmartGuy'', Moe, Mackie and Yvette's friend Nina have this trope covered between them.
* First Amp the nerd and then Rembrandt the surfer on "Superhuman Samurai Cyber Squad".
* Oddly enough, ''Series/StarTrekTheNextGeneration'' has one: Q.
* Maynard G. Krebs from ''Series/TheManyLovesOfDobieGillis''.

[[folder:Western Animation]]
* Master Shake from ''WesternAnimation/AquaTeenHungerForce'' seems to be a combination of this trope and a {{Jerkass}}.
** As well as Cartman and Bender from ''WesternAnimation/SouthPark'' and ''WesternAnimation/{{Futurama}}''.
* Wakko from ''WesternAnimation/{{Animaniacs}}''
* Dale Gribble and Bill Dauterive from ''WesternAnimation/KingOfTheHill''
* Mr. Toad from ''WesternAnimation/{{The Wind in the Willows|1983}}'', the Creator/CosgroveHall series.
* Jay's father Franklin Sherman from ''WesternAnimation/TheCritic''.
* Stanley on ''WesternAnimation/TheAmazingChanAndTheChanClan''.
* Milo on ''WesternAnimation/FishHooks''.