* Joe in the the flash animations ''WebAnimation/{{Arfenhouse}}'' and ''Arfenhouse 2'' fits this trope.
* The titular character in ''{{Charlie the Unicorn}}''. It doesn't help that the other two unicorns, apart from their blissful acceptance (if not outright knowledge) of all the strange things that occur around them, are really only minor exaggerations.
* Strong Bad, his brother Strong Sad, and Pom Pom on ''WebAnimation/HomestarRunner''. Pom Pom is essentially one of the smartest cast members, and often seems to be telling Homestar that everything he's saying is nonsense. Strong Bad, although he causes trouble, is at least smarter than most of his cohorts (and aware that nobody seems to wear pants). As for Strong Sad...
-->'''Strong Sad''': Look, you can tell me.\\
'''Homestar''': I can't!\\
'''Strong Sad''': Oh come on! What is it?\\
'''Homestar''': I'm ''[[ElmuhFuddSyndwome PWEGNANT!!!]]''\\
'''Strong Sad''': ''(pause)'' No... you're Homestar. Runner. The ''male''.\\
'''Homestar''': Oh, phew! [[CaptainObvious Thought I was a]] [[CloudCuckooLander pwegnant woman fow a second, thewe.]]
** Marzipan also qualifies at times, although this trait is usually overshadowed by her eccentricity and strawman political zeal. Surprisingly, The Poopsmith is the only character who is always depicted as a rational voice of reason (not literally, of course, considering his vow of silence).
* Due to the constant gags that render his historical knowledge (which is accurate in terms of our reality) meaningless, Timmy from ''WebVideo/TheTimeGuys'' could be considered the only sane being ''in the entire universe''.
* Church of ''RedVsBlue'' isn't exactly level-headed, but considering the fact that most of the other regular soldiers in Blood Gulch display varying degrees of incompetence or insanity, he's easily the most down-to-earth character present. While this makes him more proactive than much of the cast, it's also the cause of the endlessly irate disposition that tends to overshadow the other aspects of his personality.
** Grif would qualify in the respect that he's at least as sane as Church, were he not utterly apathetic to the crazy goings-on of Blood Gulch. Witness his logic in the Warthog argument, which were of course completely shot down by Sarge as being insane and made up. How much of his resulting personality is {{Flanderization}} or him just realizing that he cannot make a difference is debatable.
---> '''Grif:''' "The sun never moves around here! Why does no one ever want to talk about that!?"
** Simmons has also shown himself to be fairly rational when he's not being a sycophant. One could make the argument that the position of Sane Man among Team Red depends on whether or not Simmons is sucking up to Sarge.
** Washington from ''Recovery One'' ultimately fits this the best. It actually creates a weird dynamic where Church mocks the others for their stupidity and the Washingtom mocks ''him''.
*** Again, however, it should be pointed out that in a show where every single member of the cast is crazy or an imbecile, "Only Sane Man" is a relative title. Wash is most assuredly not normal, but compared to everyone else, he's at least ''mostly'' all there. In any other fandom he'd be considered a nutcase.
-->'''Washington:''' I'm not crazy, OK? Now if you'll excuse me, I need to go blow up this dead body. ''(he proceeds to do so. Multiple times. In his defense, he really, ''really'' wanted to be sure she was dead.)''
* Tails suffers for being the only non-airhead in ''WebVideo/SonicTheOtherMovie''.
* GBW in ''AHDotComTheSeries''. About half the time this is played straight, while the other half it's subverted as the universe is so chaotic that a rational approach never yields the right answers.
* Welshman in ''{{Englishman}}'' started out like this (and usually turned out to be wrong) while later on he seems to give up and accept the insanity of [[TheVerse the Englishverse]].
* While the words "sanity" and "WebVideo/TheNostalgiaCritic" don't often go together, he was this in Website/ThatGuyWithTheGlasses's April Fool's Day prank, where he got completely freaked out by the questions [[WebVideo/AskThatGuyWithTheGlasses Ask That Guy]] gets:
-->'''Narrator''': How do I know if the KGB is watching me?
-->'''The Nostalgia Critic''': Are these really the type of questions he gets? I mean, why do you need to know this? If the KGB is watching you, there's something wrong with you! Why is the KGB watching you? I don't know! Answer that!
** WebVideo/TheNostalgiaChick ''was'' the [[OnlySaneMan Only Sensible Woman]] before [[CharacterizationMarchesOn Characterization Marched On]] and had a bad effect on her sanity.
* Guy of ''WebOriginal/LifeInAGame'', being the only "real" person in his video game world, is the only one who questions the insane video game logic that everyone else seems to take for granted. It comes and goes, but the best example of it is in [[http://www.lifeinagame.com/pages/episode62.html Episode 6-2.]]
* Lita in ''WebVideo/SailorMoonAbridged'', sometimes... and 'she' is a JiveTurkey [[{{Crossdresser}} somehow dressing as a Japanese schoolgirl]]. Of course, compared to [[IdiotHero Serena]], [[AxCrazy Raye]] or [[TheDitz Mina]]...
* Nathan from ShinyObjectsVideos tends to fill this role.
* In the first act of ''AVeryPotterMusical'', Hermione frantically tries to convince the other characters that the House Tournament is dangerous, but their reaction is pretty well summed up by Harry's line: "Duh, Hermione, I'm the Boy Who ''Lived'', not ''Died''". Later on, in the second act (after Hermione has been proved right), Harry gets a turn: Voldemort has returned, but whenever he tries to talk about it with someone, they change the subject to their love lives..
* [[DrTran Dr. Tran]] fits this trope perfectly, especially when the narrator's around.
* Cyd/Codex in ''TheGuild'' appears to be the only member of the guild in tune with reality. [[spoiler: Averted when she arguably goes crazier than any of them, sublimating her real life in the game to the point of talking to her avatar and possibly being [[SplitPersonality taken over by it]].]]
* Tom fills this role in most episodes of ''WebVideo/WeNeedGirlfriends''
* Ab3, the AuthorAvatar in ''The Literature/BinderOfShame''.
* Used in ''WebVideo/YuGiOhTheAbridgedSeries'': The Other Abridged Movie. The OnlySaneMan here would be Gary Stu, who can't understand why people are so obsessed with card games - [[spoiler: until he falls for them at the end of the movie anyway.]]
** Perhaps due to a NearDeathExperience in the previous season ("I CAN'T BELIEVE I'M GOING TO DIE IN A SHOW ABOUT (BLEEP)ING CARD GAMES!"), Duke Devlin is starting to become more or less the OnlySaneMan in season 3.
* Dan O'Brien from ''WebVideo/AgentsOfCracked'' is the only sane main character but is completely unbalanced compared to the periphery characters that are actually normal.
* [[VideoGame/{{Half-Life}} Gordon Freeman]] as depicted in ''Machinima/FreemansMind'' is not a sane individual by any standard, but everyone around him is so much ''more'' insane/stupid/violent that it's really hard not to see him this way. He even says flat out at the beginning of episode 13 "Everyone is crazy but me!".
* [[WarningReadersAdvisory Derek the Bard]] is surrounded by a crazy LethalChef, a truly pathetic vampire, a mad scientist supervillain, and ''Cthulhu.'' No wonder he [[INeedaFreakingDrink hits the crystal skull vodka]] so much...
* [[WebVideo/EchoChamber Dana]]. Tom is a {{Jerkass}}, Zack is a CloudCuckooLander, Shannon is a {{Yandere}}, Porn Girl is... Porn Girl, and Mr. Administrator is a BadBoss.
* The [[http://www.youtube.com/watch?v=6CY_HGl6W2U Shark Pool]] [[RealTrailerFakeMovie trailer]] features one guy whose suggestion for stopping the shark from killing people is to not go into the pool it's trapped in. No one else seems to see it this way.
* Coltaine from LetsPlay/DungeonsAndDrogans often laments this.
* Yasaki in WebVideo/TransolarGalactica.
* Spike in the WebAnimation/PonyDotMov series considers himself this as revealed in PARTY.MOV where after a long conversation with an intoxicated Pinkie Pie he asks himself "Am I the only sane one in this crazy world of technicolor pony weirdos?".
* [[AuthorAvatar Max]] in ''AssistMe''.
* Sasha Hunter in GreekNinja finds herself rolling her eyes all the time at her comrades' antics.
* Algernon's characterization in the LetsPlay/SomethingAwfulDungeonsAndDragons gaming sessions, being dragged into increasingly ridiculous situations with increasingly ridiculous people.
* The ''CollegeHumor'' page "Facebook History Of The World" has two characters playing this role, one called "Common Sense" and the other called "Hindsight", who are the only ones to realize how idiotic the various historical figures are.
* In ''WebVideo/UltraFastPony'', Scootaloo tries (and often fails) to dissuade the other Cutie Mark Crusaders from completely gratuitous destruction. Whenever the subject of [[FantasticRacism racism]] comes up, Twilight Sparkle is the only voice of reason. And when Twilight Sparkle goes off the deep end herself, Spike tries (and often fails) to talk some sense into her.
* In ''Series/{{Noob}}'':
** In the Noob guild, Arthéon is this as long as you don't mention anything linked to Game Masters or his banned high-level avatar, while the quirks of the other guild members tend to affect their behaviour on an hour-to-hour basis. Ivy, due to her laid-back attitude about things when she's not being hit by a [[SleepyHead narcolepsy]] attack, can be seen as that among the female members of the guild [[spoiler:then the whole group after Arthéon lets out all that he's been bottling up over the years]].
** In Relic Tracker's guild, Elyx seems better adjusted than her teammates ([[spoiler:the series king of Hair-Trigger Temper, someone hit with Stockholm Syndrome towards him]] and a CasanovaWannabe) despite a backstory including [[spoiler:time in a psych ward]].
* ''WebAnimation/TurnaboutStorm'': Much like in their home series, [[VisualNovel/AceAttorney Phoenix Wright]] and [[WesternAnimation/MyLittlePonyFriendshipIsMagic Twilight Sparkle]] play this role in different ways: Phoenix comes from a mostly realistic setting full of quirky characters, and now has to cope with the weirdness of Equestria plus the quirky characters; while Twilight is the most sensible pony in Ponyville and a constant voice of reason. Much [[FirstPersonSmartass inner snarking]] ensues with them.
* In ''Podcast/WelcomeToNightVale'', most Night Vale residents are so often exposed to Orwellian government surveillance, eldritch abominations, and supernatural disasters that they don't recognize such events as odd any more. Carlos, a recently-arrived scientist from the outside world, is the only person in the town who realizes just how WRONG all this is.
* ''Blog/TheBlackLegionOfTheDarkLordSketchMelkor'' has Mac, who is a friend of the Dark Lord Sketch and holds the title of [[TheWatson Plain Old Bilbo]]. She has, so far, basically been the only one to attempt talking reason to Sketch. [[EvilMinions Everyone else]] just goes along with everything she says.
* In ''Gundam Abridged'' by ''GuttedWrenStudios'', the role is shared by Sayla Mass and Bright Noa. However, both have their crazy moments; Sayla's moments being set off by any mention of her brother, and Bright's moments by any display of utter stupidity (which occurs often with Amuro around).
* In the Lanipator's [[http://www.youtube.com/watch?v=qTHEo6990Nk episode 2]] of ''Abrigimon'', Matt was the only Digidestined sensible enough to actually focus on the battle at hand against Apocalymon while everyone else had their own SkewedPriorities.
* In ''WebVideo/ThirdRateGamer'', Billy is quick to point out the Third Rate Gamer's idiocy.
* In ''WebAnimation/BarbieLifeInTheDreamhouse'', Nikki seems like Barbie's most level-headed friend.
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