The ''WallsTrilogy'' is a [[DarkFic dark fic]] based upon Trey Parker and Matt Stone's WesternAnimation/SouthPark, written by [[http://www.fanfiction.net/u/2766578/Tewi_Inaba Tewi Inaba]], and set in a alternate universe based upon SteamPunk tropes. The first of the trilogy, Within These Walls, can be found [[http://www.fanfiction.net/s/8047441/1/Within_these_Walls here]], and is still in progress.

The story focuses on [[ThePollyanna Butters]] [[CheerfulChild Stotch]], [[TheWoobie Lilac]] [[LittleMissBadass Bar]][[BadassAdorable brady]], [[AFatherToHisMen Wallace]] [[spoiler: otherwise known as [[ActionGirl W]][[WholesomeCrossdresser e]][[TheWoobie n]][[LittleMissBadass d]][[BiFauxnen y]]]] [[BadAss Testaburger]], and [[DeadpanSnarker Puck]] [[JerkWithAHeartOfGold Swanson]], otherwise known as [[CreepyChild Kindergoth]], living in a world based upon the concept of delivers,[[IncrediblyLamePun postmortem]] men, and [[AndIMustScream special]] [[StepfordSmiler deliverers]].

The deliverers are children sent to, well, [[ExactlyWhatItSaysOnTheTin get packages and deliver them to where they need to go]] -- namely, their own households. Butters happens to be a new deliverer, sent to get weapons for Stotch's Weaponry, although he is terrified -- and for good reason -- doing the activities, he still does them for the benefit of his [[AbusiveParents parents]]. As he reaches home, enter [[CreepyChild Ir]][[StepfordSmiler is]], a special deliverer, and enter the most trouble [[KidHero Butters]] has had in his life.

The trilogy is receiving a doujinshi adaptation by MOFOSTAN.

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This fanfiction provides examples of:

* AliceAllusion
* ActionGirl: Too many to count.
* [[spoiler: BittersweetEnding]]
* BrokenBird: Once again, a good amount of characters are this.
* CanonForeigner: [[TheWoobie Lilac]], [[CloudCuckooLander Skyla]], [[StepfordSmiler Iris]], and many more -- considering it was originally submit-your-own-OC, this much is obvious.
* [[spoiler: ChronicHeroSyndrome: Butters]]
* ComingOfAgeStory
* ContinuityNod: A few to the source series.
* CrapsackWorld
* DarkerAndEdgier: Ooooh yeah.
* DarkFic
* [[spoiler: DisabilityAsAnExcuseForJerkassery: Jimmy Valmer.]]
* [[spoiler: EarnYourHappyEnding]]
* GenkiGirl: Skyla.
* InnocenceLost
* OneOfUs: The author is.
* [[spoiler: RaisedAsTheOppositeGender: Wendy.]]
* RealLifeWritesThePlot: The fic was written by the author to let out nightmares she'd been having over [[CreatorBreakdown her recent diagnosis with depression]].
* SlashFic: Partially, it includes [[FoeYay Kyman]], and [[BattleCouple Stenny]], but it also includes [[DeclarationOfProtection Wetters]] and other hetero pairings, so it's only a partial example.
* ShoutOut: All of the chapters (so far) are named after songs by FosterThePeople.
* [[spoiler: SweetOnPollyOliver]]
* TrueCompanions: [[spoiler: Butters, Wendy, Stan, Kyle, Cartman, Kenny, Lilac, Lamia, Puck, and Tybalt]]
* TheWoobie: Everyone, really, but the biggest example is [[DisappearedDad Lil]][[CuteAndPsycho ac]], [[WideEyedIdealist Lil]][[CheerfulChild ac]], [[WhatIsThisThingYouCallLove Lil]][[CuteBruiser ac]].
* WideEyedIdealist: The most prominent example is Butters, just like in the [[WesternAnimation/SouthPark canon]], but there are others, such as Lilac.
* WorldOfSnark: Mostly.