DS and Mezzo's 20th and 16th birthdays, respectively, occur during the time they're stuck in the mindscapes.
PEFeDOS during the PMD-R arc is awakened and begins her sadistic testing once again on Tagg's 21st birthday.
It repeats the next year with Tagg ending up in Ransei 600 years in the past due to concentrated April Fools shenanigans on his 22nd birthday. Herbert, also in the same situation, has his 16th birthday the next day.
Straw gets attacked by Shadow!Crewe on his 18th birthday, which was purposely invoked by Aelia For the Evulz.
Sarah was accidentally kidnapped, and subsequently held captive for several days, on her 17th Birthday alongside Ren's Treeko by an Illusion grunt.
In a mild version of this, Ren has received bad and/or unsettling news for his birthday four years running.
This happens in general when players leave without tying up all their characters' loose ends.
The Warriors sub-arc in Holon, due to the player responsible for managing it losing motivation.
Miniarcs in general that end up going slower than the main RP can become this, if players become disinterested in it before its completion.
A Form You Are Comfortable With: Tagg theorizes that the creation trio might do this when interacting with mortals, considering their eldritch natures, which is proven to be true when he visits the Temporal World during the Ranger-2 Arc and Dialga appears to him as a vaguely draconic-shaped mass covered in seemingly infinite diamonds.
A God Am I: Downplayed. Eon being a Latios is a species that are considered minor deities IRP, but he appears to have delusions of being on the same tier of power as legends like Groudon and Dialga, and demands that people worship him.
Absurd Altitude: During the Unown meeting in the interim between the first Sinnoh Arc and the Unova Arc, the group gets teleported into space, being saved from dying due to the Unown's power. They end up seeing the planet in its entirety before being teleported to the Sinjoh Ruins.
Accidental Truth: During his stint as The Ghost Lord, Umbra creates a rumor that the one who unites all of Ransei will unlock the ability to use and master all parts of the Auric Spectrum to throw everyone else off the tracks of his real plan. 600 years later, Umbra is shocked to meet Vierr, who can do exactly that - though very much minus the master part.
Achievements in Ignorance: For a long time, Daisy's Zoroark, Blacky, was able to use the abilities of the Pokémon he transformed into, even though said transformation is really just an illusion. Blacky seems to have caught on to this as his Illusion ability now works the way it's supposed to work.
Adaptation Expansion: The RP is mainly based on the universe of the main series games + spinoffs, but it also takes elements from the anime, manga, and even the TCG in the form of the Holon region, certain moves, and the existence of Delta Pokémon.
Every being hypnotized into "silence", rendering him practically unable to do anything as it would make noise until the mind control wears off.
Palkia's dialogue after being restored from her petrification makes it clear that she was conscious the whole time. She doesn't seem too bothered by it, though, apart from having found being a statue to be really boring]
And Then What?: This trope is more or less what led Jane, Tagg, and Anom to become researchers. All three just didn't feel like doing nothing but battling for the rest of their lives.
Angel Unaware: Some of the legendaries can take the form of normal Pokémon or even humans to observe and deal with mortals. Ho-oh for instance has a tendency to masquerade as a Pidgey.
♨č▒⢫╠␣☣ł₤舸▟, or the Glitch Nidorino, is a representation of the fear of death that merely takes the appearance of the first being it encounters in the material world, in this case being Vinollo the Nidorino. Luckily unlike most other Glitches it's friendly if its mission isn't to beat the fear of death into you.
The Invisible Shiny Bulbasaur that glitched up Kanto is another Glitch Pokémon.
Tagg considers a fair number of legendaries to be this trope due to their more eldritch qualities.
Arc Welding: It's heavily implied - and speculated on by both Umbra and Tagg - that the Demon Mutagen used to create the monsters in the Okamiquest sidearc had some connection to the creation of FEV in the Fallout sidearc due to the latter having very similar, if inferior, effects to the former, though the exact connection has never been revealed.
Arc Words: A veritable multitude, as many characters have individual ones. For example:
Pi: Take the mask, swear the oath, become something more.
Dune: "Criminal". Always capitalized.
Tagg: "Destiny is never left to chance."
Kaito, Diane, and Rose all use variations of "I can't afford (X) again" during the Iron-Mobius saga.
As Long as It Sounds Foreign: Sakura and Lyuri's last name, Riese was made because it looked Japanese. It does happen to be a German last name, though.
The main group, aka the J-Team, regularly coming up on top versus a number of dangerous opponents and containing some of the most skilled trainers in the RP's universe.
The PEFE Founders, particularly during their takedown of Pokefutures Inc.
The Extras, a group of vigilantes fighting off Cipher with minimal resources.
Badass Family: As found out in the Conquest Arc, several of the J-Team members are related to each other, not counting those who are already siblings.
Badass on Paper: Given how battles can be tackled from various angles besides strength or smarts, some Pokémon can end up becoming this. You wouldn't believe Dintel faced Lelouch and raised La Résistance to stop his invasion of Hoenn until you actually read it through.
Bag of Spilling: Tagg's Xatu takes his Unova badges shortly before the Unova-2 arc, forcing him to refight the Gym Leaders in order to get his badges back.
The Pokemon Trainers all end up turning into Pokemon when they go to the PMD universe.
During the OI, Fool (while possessed by Majora's Mask) turns three Pokémon poachers into shiny Pokémon.
Vyvyan the Magma Grunt starts unknowingly transforming into a Rayquaza due to having to keep Depthcharge and Buggle (clones of Kyogre and Groudon) under control. He is later kidnapped by Team Ozone, who speed up the process of his transformation.
Jane and her horde of Legendaries in the third arc.
Wolf and his Swoobat in the eleventh.
Tagg and a bunch of the other trainers teleporting down to Kanto to help Tracer and his Pokemon fight off a massive murder of Murkrow and their Honchkrow bosses.
Unite and Reshiram when they go first help with the evacuation of Goldenrod City, then stop an army at Rt. 32.
DS, the Lake Trio and Palkia during the final battle of the AU arc.
Lyuri showing up when Duke was having to fight Omega and Titan all on his own, allowing him to Mega Evolve and turn the tides.
Big Labyrinthine Building: PEFE HQ is so big that its dome takes up a good portion of the island it's on, stretches underground for at least a mile, and has Pokémon that are pretty much no different from wild mons elsewhere inside.
Big, Screwed-Up Family: The Cain-Davis family, of which Herbert and Psyche are probably the two most prominent members. Nearly every member of the extended family that's been shown onscreen is either evil, highly traumatised, just kind of a jerk, or some mixture of the three. The few decent ones almost always seem to end up dead or broken.
Big "WHAT?!": In the first Sinnoh Arc when Cresselia reveals that she is Darkrai's daughter.
Bilingual Dialogue: Human and Pokémon characters talking to one another count as this most of the time, with the humans speaking either English or other languages and the mons speaking Monese.
The fates of some of the J-Team members that survived the Draconic Uprising in PMD-B match this. The PEFE Founders for instance end up dying of old age unable to change things back, but they do end up laying the seeds to create a timeline fork and manage to raise families of their own.
The Fallout miniarc ends much like the original game, with the Super Mutants being defeated, but the Vault Dweller being cast out.
Wolf-B ends up saving AU!DS' life through sending a message through the Adamant Orb... at the cost of his own life.
The Orre arc ends with Cipher crushed (at least in Orre), but most of the Admins manage to escape justice (though not defeat), a lot of the J-Team members are left with issues, and Siren/Taylor ends up getting killed shortly after undergoing a Heel-Face Turn. On the other hand, Psyche does manage to conquer her own psychological issues...briefly.
Black Site: PEFE HQ, which is located on an island in the middle of the ocean where all sorts of science is performed, has no defined location, and has Psychic types and PEFEgons that prevent it from being found except by PEFE employees and those they bring with them. As a result only the most trusted are allowed to visit, though luckily the organization is fairly benign. Beforehand it was the property of Pokefutures Inc., who used it to perform unethical experiments, some of which were fought during the PEFExp miniarc.
During the AU arc, a bunch of the J-Team's mons board one of Lanius' slave ships and manage to rescue the slaves aboard.
A very well-organized one occurs in AU!Goldenrod when the Pokémon there have to try and counter the initial Draconic offensive, including Ariados-silk cable anchors and feline mons effortlessly climbing them up to the airships above the city.
XANADOS made copies of the Giant Tortilla, Annoski, Einroth, Edge, Gyru, Toxicroak, Fade, and Jane for the J-Team members in Xanadu to fight.
At the climax of Re: Glitch, the J-Team was forced to fight Glitch facsimiles of Constantin, Shadow Heatran, Penumbra, Sister Grimm, the Seven Jerk Dragons, Annoski, Lanius, and 'M, in that order, before fighting the main Glitch.
When DS first meets Chase the Pidove, he mentions that his wing was injured by a Purrloin. DS eventually catches said Purrloin.
DS has Brain Bleach in her backpack. This is referenced and used many times.
Chase meets the flock of Pidove that left him behind in Nuvema town after joining the group.
Briar Rose learns how to bring objects from the Dream World back with her to the real world, and intends to use this information to bring back some berries she had planted in the Dream World. Next time DS sends Briar Rose out of her ball, she has the berries with her.
Brief Accent Imitation: Jane donned a Southern Accent near the beginning. It went away after a while, though it still slips through on occasion.
Colton also adopts an overtly stereotypical Castelian accent from time to time, implied to sound like a New Yorker. He keeps it under wraps most of the time, though.
Broad Strokes: Since WAAPT evolved from a Forum Game with no real continuity, the defeats of Missingno and 'M are considered canon, but not everything that happened in the interim.
Pi and Joseph fit this as well. Of course, this is Brooding Boy, Gentle Other Boy.
Pentigan and Amaterasu.
Call a Rabbit a "Smeerp": Zig-zagged. Most regular animals don't exist, and sometimes an animal is mentioned and the trainers won't know what that is. Other times, they refer to certain Pokémon as the animal they are based off of.
The events of the games are often referenced, especially by characters who were there to witness the events.
The in-universe J-Team vs Capcom game Boss Rushes are big ones to characters that have long since departed.
When explaining to Dune, Deziree, Lyuri, and Duke about Mew, Tagg references the time during the Hoenn arc when Gamer ended up striking Mew after everyone learned about her part in Crewe turning into a Sneasel.
After the strangeness of the last couple April Fools, people start treating them with wariness.
Tagg tends to like visiting the spots of previous events for old time's sake.
During the Hoenn-2 arc, numerous hotels still deny J-Team members service due to what happened four years ago.
The Alakagross civilization had quite a few, which the dragons in the AU base their airships on.
Team Glacier has an airship piloted by Shadow.
The J-Team in general acquires an abandoned damaged Illusion Project airship and makes it their own, christened the Stormchaser, which becomes even cooler once it's upgraded at PEFE HQ.
Cool and Unusual Punishment: The judgments handed out by the Cubone tribe during Tangent, Tagg, Tracer, and their Pokemon's "Trial by Bonemerang". Examples include having to give all the kids in the tribe a ride (Tagg's Garchomp) and being unable to use Yache Berries for a month. (Gaia, Tagg's Torterra.)
Cybernetics Eat Your Soul: They did in the case of the main opponents Tagg and some of the others faced off against during the PEFExp miniarc, cybernetic Pokémon that had been lobotomized into fighting machines by Pokefutures.
WAAPT's main and sideplots can deal with heavy subjects such as racism, imperialism, and gender identity, and villains like Cipher are far more explicitly playing for keeps.
The alternate timeline is much darker than the OU, with first Napoleon cutting a bloody swath across Unova and the Seven Jerk Dragons in RtAU attempting what amounts to PG-rated genocide on the human race.
Tagg's solo adventures tend to have a darker undercurrent than the main RP since he tends to fight groups like the Unity and Cipher who are far more ruthless than run of the mill villains.
The Orre arc was the darkest arc the RP has seen since the AU, with quite a few deaths, a mass killing, trauma for nearly everyone involved, and the full ruthlessness of Cipher falling on the heads of a J-Team unprepared to handle it.
The Lillifuture is also darker than the OU much like the AU, but it takes the more grounded approach of a world falling into decline due to the fall of the J-Team.
Missingno and 'M end up being destroyed in every verse due to the OU J-Team defeating them.
What happens to Napoleon in the AU after the souls of the Midori Room mons maul his soul, tearing it to shreds. Though Snowball does end up using said shreds to create Icelus, Napoleon himself is gone.
Death Is Cheap: When Gamer's Serperior was killed by David, he came back to life as a Duskull. Also, Daisy's Charizard is killed by a madman behind the madness in Canalave City. It then re-appears the next day as a Gastly.
Quest Island, which is filled with dangerous Pokémon like Tyranitar and Skarmory, as well as having a easily awakened volcano. The Cubone tribe patrols in other regions are done by Marowak, and infant and child mortality is at a very high rate.
Other examples include post-Distortion Sinnoh in the AU, and both the AU and OT Giant Chasm.
Assumed to be done by Missingno in an attack on Canalave in the original Sinnoh Arc. Turns out it was just a Gastly, though. Prior to the first PMD Arc, though, the real Missingno pulls this on Palkia.
It also happened a lot during the Unova arc. The victims included Steven Stone, Iris, Clay, Alder, and Jane.
Satella, Eve's Cleffa, bails her and her friends out from a Manectric attack by using Metronome to teleport them all away, though it resulted in them getting lost. Turns into a Diabolus ex Machina when the same thing happens when they're reunited with some members of the team and ends up making them get lost for a few more days.
Die, Chair! Die!: Palkia makes a comeback after Missingno's first defeat in order to punch the living daylights out of a bunch of pillars.
Discovering Your Own Dead Body: When Tagg visits the PMD-B timeline he comes across the skeleton of his multiversal counterpart, entombed for around 532 years after he died of old age. He chooses not to attempt attaining his memories because he figures it might be too traumatic.
Happens to Cynthia near the end of the PMD arc, and to Jane, Wolf and Pentigan during the battle against 'M and Team Plasma at the Pokémon League.
DS is seemingly killed by Primal Dialga in a flashback, but unbeknownst to everyone, Dialga was able to resist Cyrus' orders and instead sent DS to the dimension in which the legendaries had been imprisoned.
Straw has experienced this enough times that he is pretty much unfazed by it.
Die or Fly: Auric and Obscuric abilities tend to be learned very quickly by those stuck in life and death situations.
Doorstopper: As of June 4, 2015 the main RP thread is about 18,281 pages and counting, and text-only versions of single forum pages on the main thread alone can be in the range of 5-8 pages. A conservative estimate of the amount of printed pages would be about 129,000 pages and counting.
Don't Go in the Woods: Tagg lives nearby an area known as the Sea of Trees, which happens to be based on the infamous Japanese forest Aokigahara, and possesses a similar reputation of being a popular site for suicides. It's infested with hostile Ghost types and the souls of those who have died in the forest.
Umbra had the ability to banish people to the Distortion World back when he was the Ghost Lord of Spectra.
Tagg gets rid of the Sinnoh Family of Blood branch by having Groudon take them... somewhere else.
The Dragonslayer: Inka somehow gets this fame after curbstomping Lance's haxxest Dragonites (you know the ones) in backstory. However, by the time of the Draconic Uprising in the AU timeline, she is forced to live up to the title.
The Dreaded: A number of the Trainers, including Luke, Tracer, and Tagg, gain this status during the AU arc after curb stomping their way past hordes of Scolemis grunts.
Dramedy: The story is mostly humorous, though it can take some dark turns.
Dream Land: The Pokemon Dream World, a collective unconsciousness made from every Pokémon there ever was.
The trainers do this to infiltrate the Altru Tower in Almia.
Tagg and the Vault Dweller end up doing it in PMD-B Angela in order to infiltrate the Cathedral.
Dropped a Bridge on Him: Upon finding a treasure room which turned out to be Larva and Metentis' summer house, Brudy was abruptly eaten by Larva the Cofagrigus after Metentis the Dusclops told her she couldn't have any servants.
Dying Declaration of Love: Mira to Artemis in the AU arc, after the former is fatally injured after receiving a stab wound meant for the latter.
Dysfunction Junction: A lot of the trainers have serious issues of some kind. Some examples include:
Tagg, who has social issues, PTSD as a result of his experiences during the AU arc if not long before, and has admitted to DS that he only really feels comfortable In Harm's Way.
Lyuri, whose parents died in a cave-in thanks to an Earthquake caused by Riku the Sandslash and were separated for several years. And then Orre happened. In the AU Lyuri is the last member of her family since Sakura ended up dying too, leaving her a Broken Bird. This does not apply to her sister, Sakura, though, as even though she shares the backstory, she doesn't have any lasting issues other than feeling guilt over the death of her parents.
Herbert, whose father is a Team Galactic commander who was still a better parent to him than his mother, who acted as if he didn't exist.
Jacob, who was orphaned when his parents were murdered and had his girlfriend killed by a Scizor. He also happens to be a bit unstable.
The Amarin family, consisting of Alli, a girl who seems relatively normal, but hides the trauma of losing her mother when she was just eight years old; Eskay/Sarah, her older brother/sister who saw the aforementioned death firsthand as well as almost dying the same way himself six years later, along with having accidentally murdered a Cipher Peon in a fit of rage despite having promised to never kill anyone ever, resulting in full-blown PTSD (which is only amplified by his empathic powers); and Ivy/Ellen, the dead mother in question who came back as an amnesiac Delta Golett and only regained her memory by witnessing the aforementioned attempted murder of her son.
Wolf, who was 'M's thrall for nearly ten years prior to the beginning of the RP, though he's managed to get past that.
Psyche, whose father was abusive and disowned her after she got mauled by Scrafty, leading to her Cynicism Catalyst.
Alyssa, another PTSD victim whose parents were killed by a fire, leaving her orphaned and lost in the wilderness with no social skills, along with leaving her with a haunting phobia of fire.
Crewe, who apart from being actually a Sneasel in human form, has a lot of issues regarding so many of her mons leaving or dying on her as well as possible PTSD from both that getting shadowed and nearly killing Straw in Orre.
Early Installment Weirdness: The earliest arcs (Sinnoh through Unova) are far different from the RP today, due to it being originally a forum game with no real continuity that evolved into an RP. Word of God says that was due to Missingno and 'M's mere existence making the world of WAAPT a far stranger place than it is in future arcs in-universe.
The AU arc. Its plot reaches numerous dark and overwhelming moments before its ultimate (and satisfying) resolution.
Sakura lost her parents and had her sister go missing, she spent a good four years looking for her and feeling very guilty about everything that happened, she eventually finds her, they're in good terms with each other, and she even got a boyfriend soon after, while she does occasionally have more problems, they're either minor ones or don't take as much time to be solved.
Earth Is a Battlefield: Not a single region on the planet manages to escape war during the Draconic Uprising in the AU.
The only members of the J-Team that seem particularly bothered about Umbra's past as an Evil Overlord are Herbert and Sakura. It helps that it took place 600 years ago and Umbra isn't the same person he was back then.
Likewise, the only members of the J-Team who don't quickly forgive Tagg for slaughtering dozens of Cipher Peons are Herbert, Mezzo, and Sarah. And the only member of the team who still holds a grudge against Lyuri for her crimes as Alexia is Herbert. Sensing a trend here?
The Anomaly aka Missingno and 'M, biological supercomputers whose mere presence warps reality.
The imprisoned being found in the deepest recesses of the Blacklight Caverns in the Orre Badlands in Dune's backstory, which he only barely escaped from, at the cost of his mind being scarred and incapable of being touched by any kind of telepathy. Known as the "Criminal", due to the runes in hundreds of languages stating the word around its prison.
"The Duke" and "The Prince", two possessing spirit things, the first in Pi's head, the second in the head of the villain Mortimer.
The dimension where the heroes took on Missingno for the first and last times.
Glitch City, 'M's home dimension.
The Temporal World, Dialga's home dimension, where all time takes place at once. On one visit, Tagg's party spots their future selves looking at them from far higher up.
Some of the Mindscapes
Electric Love: When Tagg and Channah kiss for the first time, the former has an involuntary release of his Aura powers that gives them both a tingling effect.
Elseworld: Many, but the two most often seen are the AU created from Cyrus' time tampering, and the Another!Verse (Based on The World Ends With You's Another Day mode), a Lighter and Softer version of WAAPT.