Aborted Arc: Some arcs fail to finish, leaving things hanging.
Etheru's "New Homunculi Arc" will probably never start, due to the fact that the player himself has no clue what to do with the idea. Same with the Grimmoire Arc, and several other ideas, though he does play with the idea of going to the locations, sometimes.
Hydronix's Quest 64 Arc. It unfortunately happened offscreen instead, due to some lack of interest in playing it by some tropers.
Another one of these arcs was more of an Alternate Reality Episode: each player played alternate versions of their more established characters and had them interact as if they were only recently introduced to each other.
Anti-Magic - Juergen has a condition that has a magic and Psychic Powers dampening field around his immediate vicinity, it also unnerves psychics around him, and even harms them when they get too close to him.
The first happened on 4/1/2011, where several players took advantage of the changing avatars by playing them as gags.
On 4/1/2012, many characters showed up in place of the group as one-off gags. Most of them were from the twospinoff roleplays, the other characters were Others. In addition, several characters played pranks (Catherine Grayson cosplayed as Vriska, Vivian prepared some Explosive Runes, Envy and Nue played tricks on Maggie and Hilarity, etc.).
Ascended Extra: Harry, Faker!Metis / "Raven", Chaos Deviot (present version, though this is arguable), Bassy, Scorpion (may be the only true exception to this trope here), Kokonoe and her crew, WarMECH, and Future!Joey Jones.
Etheru used a few characters who only got a few moments of characterization (Emily, Obelisk, Ami, and Marjorine) in the The Bus Came Back arc.
In between the Writer and Tale of Two Yukaris arcs, Catherine's other Lightspeed Rangers only showed up to try to help the group stop the Retconinator by shutting down the Morphing Grid. Come Alyx'sOrigins, they actively helped Catherine, her family, and Alyx, to the point of being involved in the final battle.
During the group's stay at Amestris, a group of Enclave deserters with them originally being one shot characters. Then comes the Legion's invasion in Nether Vegas where the same group swoops in guns blazing as The Cavalry. Later on, their commander, Adam Longram, would become a major character in the WAOAA spinoff and eventually WAOA recently.
Andy LA likes to insert musical references whenever given the chance.
Author Filibuster: Etheru used Bass to violently lash out at the Characters and the Tropers, but afterwards, Etheru tried to make amends with the Tropers, and promised not to do it again.
There was a brief period of time where Osaka would not shut up about Dee. She got better, though... before getting worse again.
Averted in a battle with Xavier's Him, despite looking like it at first glance. Etheru said Mega Man wasn't channeling a dislike of commonly used ideas in the game, Mega Man was just that pissed at having to fight yet another opponent with sadistic kinks and other things encountered before with previous opponents.
Big Eater - Carter, lampshading that he doesn't gain a pound constantly, until...
Balloon Belly - In the world of Pokemon, Carter ate more than four hundred hamburgers, resulting in quite a bloated stomach, and instead of being brief, he had to work it off. And then it happened again with every single Grayson ever since, with the exceptions of Matt, Andreus, and Alyx (and even then, her weight gain is fairly realistic).
A non-Grayson (at the time) example would be Arcadiarika herself in-game, also due to a result of overeating. However, unlike the Graysons, she had a Gaki inside her body, which could explain her sudden and permanent weight gain.
Bittersweet Ending - The Witches Game arc; on the one hand, the trolls can't bother the main characters anymore, but on the other, Featherine can.
Not to mention Victoria Grayson dies. Granted, she got better, but...
This was considered a very controversial decision, especially when there were a million other ways to write out Victoria without killing her. It also did not provide anything to the plot at hand, so even if she was brought back, she died anticlimactically and died for nothing.
Breaking the Fourth Wall - This was a prominent running gag, where characters like Bass, Deadpool, Bernkastel, Raven, among others, would refer to the readers and the people reading. However, the gag was done to death and it's since been downplayed.
It got to the point where Etheru retconned the ability out of Bass because of annoyance with the gag.
Brick Joke: At one point, Bass told Asagi that she was in a dating sim. A hundred pages later, she still hasn't exactly been told otherwise.
In a more recent adventure, the gang has landed at a refueling station that's nothing more than a truck stop in space. Almost immediately, newcomer Pilot Solaris, his friend Human, and Grey enter a bar. Pilot's first action is to drink a shot of whiskey, and Human orders a coca-cola. Several hours (and several pages) later, Pilot returns to the bar, and Human is gone—and a pile of empty coca-cola cans is sitting next to his now-vacant seat. We don't see Human again until the next day, when he's seen leaving the bar and making a note to never go on a coca-cola binge again.
Capcom Sequel Stagnation- It's mentioned in the discussion that, in most plots involving the Multiverse being conquered/taken over/attempted to be destroyed, there's rarely any variation, the plots feel the same most of the time. Predictably, it's subject to a lot of parody.
Catgirl: Hina (sometimes), Nepeta, Ozzy (sometimes, anyway), later Osaka. Even "Raven" got into it. We also have some catboys, and an entire set of pages where everybody was a cat person for a while.
Ax lampshades this trope when he wonders why there are so many cats, catgirls, or cat-themed characters in the group. The answer? Because Cute Kitten.
Averted with Tira, who only wears a cat-eared tiara.
Cerebus Syndrome - Somewhere around the first Wham Page (see below). This has been slowly happening since the beginning; it started out as avatars just interacting randomly with each other with no plot whatsoever. By now, there's a highly active discussion thread.
Characterization Marches On - The Trolls from Homestuck got this treatment a lot. As more and more information was revealed, some of the information contradicted some stuff established in the game. Not that it hurt anything, considering that they could easily be handwaved as Others.
Apparently, before Carter/Catherine became known for...that, he originally was a bit parodic, showing PSAS at opportunities, but then...
For the latter, this was lightly deconstructed when Carter left Jennifer to save Martin, leaving the new girl confused. He then promises to tone down his tendency to save people's lives...which ultimately did happen during the Skyrim arc.
Cool Big Sis - Osaka, to Dee. Over time, though, their relations got worse with Osaka becoming incredibly obsessive over Dee, which resulted in Dee leaving the group.
Cool Sword: Joshua Strasin's warblade, a valgirai weapon that absorbs UV radiation and then upon activation goes all lightsaber-y.
Caim's Strifesword, which he got from killing the Goddess of Strife.
Oryx's magic sword is made of Tenebrium and can fire flame lasers and energy shurikens.
Mitch's sword that he obtained after killing Caesar the first time.
Crapsaccharine World: The world future Tails lives in is seemingly an amazing place, and Tails has the fortune of being the president of a non-corrupt Mega Corp.. However, the corporations that are corrupt are far too numerous, the Earth has been in a war between Oceania and the Furon Empire over who gets to enslave the populace, and Tails' position causes him to be a frequent assasination target, losing an eye and an arm on two seperate attempts.
Crapsack World - The World the Consolebots come from. Even after the Great Liberation, it's still pretty bad.
From a world of Superheroes comes Dusk City, a city full of pollution, corruption, and a few other things, including superpowered criminals and an arms-smuggling ring. The Past District in the town, which bases itself in the 30s and 40s, actually seems more pleasant.
The world of BlazBlue was already pretty crappy. However, the Bad Future Hakumen comes from is implied to be even worse, with Terumi as Imperator Librarius in all but name. It got to the point where La Résistance, spear-headed by Kokonoe, began to search for allies from other worlds to replenish their badly depleted ranks— leading to Hakumen meeting the Group.
Crazy Cultural Comparison - Asagi Asagiri has this because she comes from a series where there is No Fourth Wall... which translates to her coming from a home dimension where everybody has an intrinsic understanding/belief they’re part of a video game, and all the terminology/concepts that come with it.
Cross Player: It's rare to find a player who hasn't played at least one character of the opposite gender...
Cute Mute - Game-changing character Bit started out as one of these, then minus made her able to speak, and freed all of her kind.
Tails Doll is only able to be understand by a small list of people, considering he speaks in Mmphs.
Astrid Avgren is mute and communicates mostly by writing.
Dangerously Genre Savvy - One of GG's superiors was this, having gotten rid of the papers and data on GG's identity before he got there.
Demoted to Extra - Dee, up until very recently. Shortly after 3Dee's introduction, she would usually only say anything whenever Cupid was involved or during introductions and would tend to sleep the rest of the time.
And then Rachel Elizabeth Dare appeared, which pushed Dee's speaking appearances back down into "pretty much nil" territory. You just can't win, can you?
Dee got better, leaving Osaka's Other to fall into this territory; she was a pretty major character in her first appearance very early on, but lost most of her screentime to Dee and 3Dee in her subsequent appearances, due to her writer's preference for the desdroids.
Dee eventually left due to relations in and out of character spiraling out of control, causing Dee to leave.
Protoman appears a lot less, but Etheru is trying to give him more appearances.
Gandalf is usually this. Justified in that he's an old man(despite being undead) that uses powerful magic.
Inverted with Osaka, Lyra, and Lip (less so with the second one) who grew more and more attached to Mana as time went on, to the point it became their only notable character traits.
Dysfunction Junction: Most of the characters played by arcadiarika. Eventually, they got better. By a lot.
The entire group can be seen as this at times.
Does Not Like Shoes: Mana goes around completely barefoot all the time - being 50 49.6 meters tall, there's a pretty good reason why she never wears any shoes. Osaka often sits on and occasionally playfully tickles her feet.
Erotic Eating: Subverted with Sara, the former sexbot, who just chomps down on bananas.
Inverted with Drifter, who had a Good Counterpart. They joined the group after the evil counterparts kicked him out for not being evil. After the original Drifter was killed off, he became a regularly occurring character.
There was a previous arc where there were evil versions of the group being led by a Dark Other of Alucard, Adrian Tepes.
Evil Is Petty: The Ivory Lagiacrus. It Destroyed ships around Jaya for the hell of it, posed in photos like an egotist and took a little girl's ice cream cone. The hashtag for that particular picture was YOLO.
Failure Hero: Catherine got a lot of constant flack for this. Arcadiarika said that she made her constantly fail because the group is often accused of being too powerful (of course, those who accused the group never seemed to acknowledge that it is less about the power of the group and more about numbers). As such, Catherine was hit with too one Diabolus Ex Machina too many. This was fixed, but at the cost of going the other way by not allowing her to fail.
Fantastic Nuke: Imca suggested that Aurora could wipe out the Thalmor with a gigantic magic spell as a warning to those who try to take over the world. At first, Aurora thought it was bad because there's the possibility of civilian casualties. Mitch even compared it to the situation that caused America to drop the nukes on Japan.
The Federation: The United Multiversal Federation. Several characters, however, have commented that the Multiverse is too big for one group to police effectively, and that they may have too much power.
Metal Sonic is angry that he was always left in a lab to constantly be updated while pondering why he was made, and why he didn't have friends like Sonic did.
A less extreme example comes from Red, a fairly cynical character. Her reasoning comes from her world's erratic behavior; it's far from a Crapsack World, but it's given her a cynical attitude.
Izzy's reasoning behind his dislike of Yasmin stemmed from the fact that he was put through painful tests to see if he could replicate her, often being compared to Yasmin in the process. He seems to have gotten over it.
Subverted with Modern!Gensokyo, which has been part of the United Multiversal Federation for 50 years.
High School AU: Was a focus of an arc, where Others of the group attended the Jethro Q Walrustitty Boarding School. It was so well-liked that it gained the second spin-off.
History Repeats: When Dee entered the game, Midna promptly became obsessed, and had backlash toward any other characters that Katrika had (such as 3Dee), calling them Wesleys. At some point, Katrika got sick of Midna begging for Dee to be played practically all the time, and she left. She came back briefly, then left due to Midna unsubtly dropping an anvil about wanting to see Dee, leaving a lesson learned. And then Mana appeared, and when Hilarity played Anne, Midna said Anne was a Wesley. While there was no quitting involved, Hilarity still being a long-runner, the events still repeated to the point where Midna was finally forum-banned.
Hope Spot: In Hoenn, Hakurei Miko was about to finally able to go back to her Gensokyo which is a decade overdue. However, Evil Eye Sigma 4 blocked her path and making sure she stay out of her homeland no matter what. Miko was less than amused by this.
Informed Attribute Imca's player feels this way about Imca's fighting skills, since in over a year of being played, she has never once delivered a kill shot, only once managed to be of any actual use in a fight, and tied with Mario in a duel, despite many battles taking place.
Killer Game Master: The Dungeon Master, a Tabletop Game-themed super villain. He narrates the actions of the heroes coming after him and uses giant dice to determine their rolls. He invokes Rule Zero too much and angered Starlight.
Killed Off for Real - Bit, Tails, Matt, all of Team Metal save Iron Amy/Amy Nidorina, Mammon and Guilty, Ime Anne Assman, Future!Chaos Deviot, Future!White Air Knight, and Subject Phi.
Loads and Loads of Characters: Lots of tropers change their avatars often, so expect lots of characters to appear, vanish, reappear, and develop in no particular order.
And by now, nearly every player plays multiple characters at the same time, even if only one of them is in their current avatar, taking this trope Up to Eleven.
Of course, the number of regulars played by each troper tends to vary. Sapphire Flame, for instance, has become quite self-deprecating about the unwieldy number of regulars he plays.
Etheru's gotten a lot of characters, and seems to be following Sapph's footsteps, many of which are Original.
Although Icarael lacks the sheer number of characters Sapph or Lemurian have, he compensates for this by having the most amount of characters with the group (11, counting Kokonoe and her crew plus WarMECH).
Dreigonix suddenly introduced a large influx of characters (Khez, Barry, Flantron, and S.C.O.R.P.I.O.N.) in rapid succession at one point. And now he seems determined to roboticize every Touhou character in the series.
Mama Bear - Osaka is pretty happy and friendly normally, but if you mess with her "little sister" Dee and she's around to see it, she'll tear into you without hesitation.
The usually calm and collected Ozzy will hurt you if you try to harm Mika or Wrath.
Cyber Amy will try to kill anyone who messes with Baby Onix. And she's not hesitant to be violent either.
Hakurei Miko will be merciless to anyone if they try to harm Reimu or even her Others.
Whatever you do, do not attack Catherine Grayson's family or even mentioning the idea of it. She will find the attacker(s) and either talk them out of it or, if they're incapable of being talked out of it, just flat-out attack them.
Mega City: Some characters from Modern!Gensokyo implied their home to be this.
Nice Job Breaking It, Hero: Mega Man bargained with Kasei that if they let Luca go, they could look through him. Both sides held up their part of the deal; however, Kasei got the upper hand, as he managed to acquire the schematics of Mega Man's weaponry.
In a similar situation, Aurora struck a deal with Greybaum: if he let Dr. Distatio's robot daughter, Kelly, go, Aurora would give Greybaum directions to a dimension where some Phlebotinum could be found. Unfortunately, by that time, Greybaum had already analyzed Kelly and disassembled her, meaning that the trade came out in his favor.
To make matters worse, Tsubaki was with the group that bargained with Greybaum, allowing Terumi to follow the group via a bug on Tsubaki and offer Greybaum help in exchange for the research data on Kelly.
No Bisexuals: Averted with Gabriella and, for the most part, Catherine. "Raven" as well, oh so much...
No Kill Like Overkill: Nova bombards a cave with a giant ship because it hid a Deviljho. It survived the impact.
Nominal Hero: A version of Aurora is supposed to be the Dragonborn. Instead, she chose to focus on sidequests, and the Group essentially stole her job. However, the Dragonborn ends up being congratulated for their achievements, angering Imca and Asagi.
Not So Stoic: Hakumen breaks down when he sees Rota's memories of her rape. To be fair, everyone else broke down at that point too.
Official Couple - Twenty-two. In order of appearance, Joshua/Jeniffer, Bit/Link, Maria/Alucard, 3Dee/Xenos, Dee/Joat, Hilarity/Osaka (now broken up), Michael/Melody, Catherine/Kotohime, Victoria/Lrith, Aurora/Max, Sapph/Anne, Gabriella/Cyber Amy, Lip/Usso, Brian/Garcie (broken up as well, on better terms, though), Rai/Konoe,Ty/Luca (now broken up), Mammon/Lillian (now broken up due to death), GG/Garcie, Falken/Asagi/Imca, Gene/Laverne, George/Lillian, and Alyx/Hayley.
In everywhere but the main roleplay, Luca/MegaMan.
Raidou Kuzunoha and Garcie usually play this role to the Group. Hakumen and Rai have a different approach to things, using the uncanny ability of the Group to attact weird things as snark fodder.
In a group of Evil Counterparts, Nega-Kari, Carona, Evil!Anne, and Leaks fit this role among the psychos, blood knights, and Psychotic Blood Knights. Nega-Kari's a weird example, being the Counterpart of a Ditz who barely knows about social customs.
Psycho!Gamzee, or Sane!Gamzee, whichever name you prefer. It was shocking the first time the stoner went nuts, but now whenever he makes an appearance, it's almost expected for him to flip the fuck out due to lack of Sopor Slime.
Jack being mistaken for a boy (not helped by the name and androgynous Avatar).
Hakumen and WarMECH being the last two people left awake at the end of each day.
Random bolts of lightning striking characters and transforming them in amusing ways.
The Silver City hotel's walls being demolished.
And now any Hotel, just to mess with poor Sapph.
When the Fourth Wall is broken nowadays, it's usually accompanied by an aggravated scream by Bass, who's relaxing back in his world, usually growing more and more apathetic to the Fourth Wall breaking.
Story Arc - Although the setting is easily changed with some effective roleplaying, some longer arcs have been implemented. After the move to Role-playing, there's always been one or two. Anyone who wants to can usually kick off an arc, and several plots sometimes run at once. Fortunately, this doesn't seem to have become too confusing. Some of the more note-worthy ones are:
Shown Their Work: Some Tropers do this to make their characters consistent or accurate, or do it to further the Alternate Character Interpretation. But outside of characters, ideas and concepts are sometimes borrowed by looking through the original plans of some franchises.
Arcadia's done a lot of homework about the Power Rangers/Super Sentai franchises. This is particularly blatant during the "Revenge of the Spark", "Alyx's Origins", and "Sins of the Past" arcs.
Superpowered Evil Side: Dark!Bassy(also known as Feral and Evil!Bassy), Black Frost, argueably any of the Incarnates as is
Super Robot / Real Robot - The Phase Distorter was created from an odd mishmash of both, incorporating technology from several different mecha from different universes. Given the generally soft setting, though, the end result falls into the former category. Its head even looked like a Mister Saturn.
Melody, the demon that's teaching Roll how to use some demonic power, fits with Mega Man (or Rock) and Roll's music theme, but she's less than a Mega Man character (due to supernatural origin). Interestingly, the name fitting into the whole theme was an accident.
Token Evil Teammate - A few players have attempted to create these; they usually fail miserably.
Merchant and Caim may be exceptions to this rule, however. Neither of them really cause a major amount of trouble, regardless of alignment. The problem is that they rarely do anything evil amongst the group, making it hard to see them as Token Evil Teammates.
Bart would be this trope if it weren't for the fact that he's so horribly ineffectual.
S.C.O.R.P.I.O.N. is a feared galactic conquerer in his own universe, but is so overshadowed in power by the other group members that he decides it's be better to make allies of them than enemies.
This trope's history of failure is the entire reason why Tira was given a third, more approachable personality by her player.
Tsundere : A common character trait, so much so that Taiga once compared it to a virus.
Unfazed Everyman: A common archetype assumed by characters who are unfamiliar with the technology, magic or seetings used in the game, as well as new characters who have just joined the group. Often used as a means to explain to the unfamiliar what is happening in the game. Out of context, newer players also assume such a role when they find their way around the game.
Unusual User Interface: During the investigation of a submarine in the world of 3E, Marcia speculates that it might be controlled by an arcade machine. Turns out she was right, and the thing is even powered by quarters.
Verbal Tic: As mentioned above, some catgirls use Nya and variations.
"Raven" as a wolfgirl rolls her Rs sometimes.
Jack Frost has his "hee-ho".
Sunny has dood, which she picked up from a prinny with her adaptive speech programing.
Writer on Board - One example would be Andros telling the group how the Touhoumons aren't cute, want to take over the world, etc. all because arcadiarika didn't like them (at first). And then there were the times where the Graysons were used to voice the writer's negative feelings.
(Bioshock!Elizabeth opens the chests Mana had retrieved from a very tall pillar with a lockpick.) Gaimon: Oh, thank you a million times, miss! (Gaimon opens the chest now that it is unlocked.) Gaimon: ... (Gaimon looks shocked and the others look inside the chest.) Gaimon: ...they are empty. Mana: ...Aw. Bioshock!Elizabeth: ...Huh. That's...quite a surprise. Joseph: Oh... Gaimon: Actually... I have thought about this before... it was a possibility, but... I always try not to think about it too much... (Gaimon begins to tear up.) Bioshock!Elizabeth: ... (Bioshock!Elizabeth Consolingly pats Gaimon on the fro.) (Gaimon sobs for quite a while.) Gaimon: But... I suppose... this is better this way, maybe... Bioshock!Elizabeth: Why is that? Gaimon: What... what would I do with this treasure anyway? Bioshock!Elizabeth: ...That is a good question. I don't suppose you could buy a ship off of this island anyways. Joseph: A Good question, Gaimon. Maybe the real treasure is the time you spent with your new friends? Gaimon: I'd never want to leave this place. I couldn't just abandon my friends. Bioshock!Elizabeth: I'm sure they'd feel the same way. (Elizabeth smiles innocently.)
Yaoi Fangirl - Yanmie got very turned on by seeing Enker and Ty kissing, and once tried to find Leeron's stash of doujinshi.
Zero-G Spot - Used as a way to convince Black Baron into giving up his piece of the device.
Imca: ....Ummmmmm, why don't you retire in space. You can make a movie out of it. "Pimps in Space"..... "Bitches in Space".... whatever you want to call it. Not that I would approve of those but negotiation.... (Black Baron thinks about it for a moment.) Black Baron:Well, the ladies do like the ol' space horizontal tango... ...Ah, what the fuck. Ya'll mothafuckas got yerself a deal!
Waldorf: I can't believe it. An entire page, and we don't get mentioned once! Statler: Yeah... should you thank them or should I? Both: Do-ho-ho-ho-hoh!