Mood Whiplash/Web Comics

"Tom: That's right, it's the end of the chapter! I hope I successfully tricked you all into thinking something weird and wacky was going to happen, but in the end, it was just about a girl crying for her mum."
 * Gunnerkrigg Court did this in chapter 6, with the mood shifting from lighthearted to sad in a single page. The author even commented on it:

"Sand Person: Ow!! My splanch!"
 * Similarly, chapter 19 gets intensely creepy, which makes the sudden Crowning Moment of Heartwarming all the more effective. Which in turn makes Annie getting the rug yanked out from under her--on the very next page--all the more shocking.
 * Also here. And here. And there.
 * Chapter 34 is made of this.
 * Chapter 36 is one of the most lighthearted in the comic, consisting almost entirely of Antimony's wacky shenanigans with Red's class. The very last page of the chapter has.
 * College Roomies from Hell. It began when a Mushroom Samba turned into an all-out battle with Satan that nearly ended with a main character sucked into Hell, and just kept getting more extreme from there.
 * Doubling as a Wham! Episode, the wedding of Brent and Jade in the webcomic PvP, which featured Jade's Rich Bitch mother nearly ruining the entire occasion on a whim (by cancelling all their reservations because she hadn't been consulted on any of it), Skull's abrupt departure from the cast (complete with Brent nearly getting murdered by one of the Gods sent to fetch Skull), and.
 * This DDG strip features the standard Man, I Feel Like a Woman moment and moves swiftly on to Zip's reaction to finding out his funeral wasn't well attended. To be honest the comic itself does tend to swing between the wacky hi-jinks in the afterlife and sudden angst filled strips which are slowly revealing how Zip got there.
 * Sluggy Freelance is the drunken master of Mood Whiplash, still mostly light hearted both during and after events that would cause others to go down as having Cerebus Syndrome. http://www.sluggy.com/daily.php?date=060612 is one of many that features a sudden mood shift within the same comic.
 * March 1st 2010 has an especially good example finishing an arc of goofy recaps with only a little seriousness in the middle and total ridiculousness at the end, with Torg channeling his That Which Redeems self in the last panel.
 * June-July 2011, the last week and a half of 4U City Red.
 * Sluggy is especially ugly about this in that it not only whiplashes with sudden content changes, it whiplashes with sudden attitude changes about essentially the same content. It initially treated violent death as Bloody Hilarious, and even after Cerebus Syndrome set in it still reverted to form for a lot of gags, sometimes making it difficult to tell whether you were supposed to laugh or cry at a particular death. About nine years into the series, the author started to lampshade this by having some characters react realistically to deaths other characters laughed at.
 * Penny and Aggie. One strip has the Girl Posse being farcically evaile as they plan to use a target's unannounced homosexuality against her. In the next strip the psychotic one is making a false lesbian rape accusation when the worst the posse had done before was a Party Scheduling Gambit. In the next strip she turns out to have no idea of how people speak as she gives her assailant lines that would be at home in a 1950s Scare'Em Straight flick. In the next strip the accusation snaps back into plausibility, and she implies body parts that women don't have before starting to tear up...
 * It's Walky! Every. Last. Storyline. The other Walkyverse comics tend toward this as well, but Walky is indisputably the gold standard. One week - tortured angst. The next - week long Toilet Humor!
 * Minus is a story about a young girl with godlike power. What makes it so creepy is how often her (ab)use of it switches between whimsical, mischievous, accidentally creepy, and flat-out evil. For instance, early on she pops all the balloons a vendor was selling, and when he yells at her for it she casually kills him.
 * And then there's this one.
 * El Goonish Shive... goes all over the mood spectrum, and is see-sawing between the extremes. Shive does try and stop the comic's tone from stagnating, and so he keeps it bouncing from wacky to dramatic, all the time.
 * From the comedy of Gender Bending to the drama of Ellen's creation, to the comedy of the following strips, back to the drama, this time starting with, and the revelation of Grace's background. "Evil Monkey" arc? "Hammerchlorians" quest part by part? Dragon fight arc ... A "simple" pre-arranged double date in "One Way Road"...
 * "The most emotionally unbalanced comic ever."
 * In Looking for Group, some characters occasionally sing in battles, particularly against large mobs. These battles tend to get particularly bloody, but the songs chosen are generally happy themes, such as Lean on Me and The Rose.
 * Lean On Me is also very appropriate - it's used on a rescue mission, and The Power of Friendship is front and centre, along with the slaughter and bloodshed.
 * And then there's Richard...
 * The singing is done by the team's Boisterous Bruiser, so singing inappropriately is hardly out of character. Richard, however, appears to be waging a lone crusade against Cerebus by inserting cheap jokes wherever he can.
 * Something Positive has a very evil tendency to do this. It's quite possible that no long-run storyline has ever quite gone without banging up the readers' emotions at least to some extent.
 * Three words, the catgirl arc... * shudder*
 * The comic where Fred and Monette discussed the comic-book "incident" ... * roflm--sob*
 * RPG World both used this straight and parodied this. The dramatic death of one character was followed in-comic by Jim (the player) reacting and posting about the game on a message board. While within the game itself, the death is followed by a butterfly-catching minigame, prompting the characters to complain about not getting sufficient time to mourn.
 * The Order of the Stick #640 brings us the genocide of . And a college basketball gag.
 * With the exception of maybe the first 50 gag-based comics, I think it's fair to say that The Order of the Stick does Mood Whiplash almost all the time and actually makes it all work really well. One of the earliest examples was actually "Saddest.Comic.Ever", a Tear Jerker comic strip that was immediately followed by Durkon rejoining the group in time to hear Elan's hilarious attempts to convert Vaarsuvius to the Cult of Banjo.
 * 759 seems like a Crowning Moment of Heartwarming, with Tarquin making Elan's name appear in lights on the mountain, causing them to share a tender moment and hug eachother. And then you find out what those lights are...
 * This strip of Darths and Droids shows the scene of Shmi dies and Annie as Anakin makes her character filled with rage and go on killing Sand People...the punchline?

"Ace: So, what did she do? Nina: Oh, not much. Only that her stratospheric rise to power ushered in an age of darkness and despair to all of mankind. And how widows wept over the unidentifiable remains of their husband's corpses, as virgins shed tears of blood, as the streets ran red with crimson most pure!!! Ace: O_O Nina: (completely normal) Also, she had a kitty. Its name was Mr. Boodles."
 * Done frequently in Mountain Time, as shown here.
 * In Everyday Heroes, while Jane is cleaning, she comes across an old photo.
 * Ctrl+ Alt+ Del. The abortion comics. A Convenient Miscarriage that follows a previously untragic story and is followed by more gag comics.
 * Much of the dark humour in Lackadaisy comes from this. Notable example is the strip Houdini, where a quite sweet scene between Ivy and Viktor pans out to reveal the dangling tail of the man he's just brutally murdered.
 * Homestuck has so many it was given its own page.
 * Keychain of Creation sometimes falls into this. Compare this Tear Jerker to how they get Misho to cope with it
 * Done in something of an arc in Welcome to Pixelton. Our brave heroes Kirby and Fil have what they assume to be an intruder break into their house in the middle of the night. They get eaten by it after a failed attempt at accosting the monster. What follows is a humorous look at what they assume to be their final moments as they prepare to be digested... and then the Mood Whiplash kicks in when Fil hits a Self-Destruct Mechanism in the thing's stomach and the 'yellow pony-thing' blows up. Turns out that the monster's species transports people around in his belly, and the guy was a fan of Kirby and Fil and was taking them to meet his family. And they killed him.
 * Slightly Damned does this a lot, contrasting character driven humour with a plot that starts with the main character going to hell and arguably gets worse from there.
 * Immelmann (the author) admits to using this trope by name in this Concession comic's alt text. The comic takes an abrupt turn from ridiculous and comedic to gravely serious.
 * Nerf Now, a webcomic with cartoonish characters that often has a very light hearted tone, has done this with three story arcs.
 * The first involved a look at what it meant to be a Drone for the Zerg in a competitive game, starting off with a gleeful adventure, and ending in the complete annihilation of all the moe-fied Zerg forces save for the drone, whose life was sacrificed for a new hive.
 * The second went into the author's own Team Fortress 2 story, which had up until this point only gotten as dark as the Heavy quitting the team to go join a team of babies. This particular one however went much, much darker than that.
 * There's also the episode where we get to see through Splash Woman's eyes for Megaman 9. It begins out with her life being all she could ever want, until she's to be recycled. Right before she's crushed, the machine stops, and we see a heroic Dr. Wily reaching down to offer her a second chance. We flash forward where we seen her stage in ruins and a soulless Megaman facing her. She soon finds herself no match and prays on the ground where Megaman places his gun to her head and BLOWS A HOLE THROUGH HER HEAD. The scene flashes to Dr. Light at the controls, smug with his victory. The camera rotates revealing a half completed Megaman X along with a computer screen with a similar symbol on it that condemned Splash Woman to recycling next to Megaman's name.
 * Nuzlocke Comics frequently do this, courtesy of the subject matter: Pokémon adventures in a world where defeat means getting Killed Off for Real. Silly antics can swing into tearful losses in a heartbeat, especially whenever battles seem to be going really well...
 * In Erfworld, Parson provides what could be the page quote for the entire concept while first adjusting to Erf World, "Everything is cute. Like it's been made safe for children. The people even look like children. Except then they die."
 * Goblins has a tendency to go from funny strips to horrific death.
 * Demon Eater switches its approach as time goes on, depending on the circumstances. Since it's narrated in an almost-first-person point of view, it certainly reflects the main character's view of the world.
 * Wapsi Square went from a week of goofy strips about Monica being an audiophile to an incredibly dark and graphic sequence about the creation of the chimera.
 * More recently {between this strip (21 May 12) and this one (8 June 12)}, Pablo manages to do it twice.
 * Eerie Cuties has its moments. Ace and Nina have to do a report on an ancient vampire queen (some of which turns out to be plot points later).

"Narration: Evolution is funny. Generation after generation of Fillipods were naturally selected for stalks capable of ever-stronger van der waals forces. Basically, for reasons of diet. The Winter Tilla fruit has an amazing combination of proteins, carbs, and vitamins... but has a tree bark that's glass-smooth, and impossible to climb. Hence the natural selection towards van der waals forces: the Fillipods who could climb... could live to breed. It's an ability that's kept them alive for thousands of years. And, oddly enough, did so again when"
 * Nina again, later. "Our family has no enemies!" Don't be silly, Dio.
 * Drive:


 * Questionable Content demonstrates and lampshades it in this strip.
 * This Brawl in the Family page has a bunch of traditional Waluigi nonsense. Until you get to the last strip, that is...
 * Done quite deliberately in The Adventures of Dr. McNinja here.