- The names of Silver, Kris, Leaf, Barry, and Hugh may fall under this. The first three are named after their games (though "Kris" was used in official sources in North America), Barry is named after his anime counterpart, and Hugh is the character's default name.
- Prior to the anime Barry's fanon name was "Damion".note
- Trainers all beginning their journeys at the age of ten. While this is canon to the anime, the games have made no such statement (and you can in fact battle trainers who are much younger, including preschoolers- though they usually aren't found in places that would indicate that they're out challenging Gym Leaders).
- A "subtrope" of this is the main protagonists of each game being ten. The only protagonists to have a canon age are Red and Leaf, who are eleven. Hilbert, Hilda, Serena, and Calem are implied to be much older while Nate and Rosa seem somewhat older.
- Pokémon Colosseum and Pokémon XD: Gale of Darkness being canon to the handheld games.
- That Pokémon Speak exists in the games. Pokémon Speak is more of an onomatopoeia in the games, and the Pokemon are supposed to cry like animals. It's more noticeable in Pokémon Origins and Pokémon Stadium, where their voices aren't as digital-sounding.
- Red, and less often Dawn, are presented as The Stoic and Comically Serious badass's. Hilda is often a badass Ladette-in-the-making and a boisterous tomboy.
- Not once has someone said "Oh my Arceus" or otherwise used "Arceus" as a substitute for "God" but it pops up constantly.
- Most legendary Pokemon have sexes. It's just technology cannot figure them out.
- Pokemon and animals co-exist. It's highly ambiguous in the games, though the series seems to be differentiating itself more and more from the "real world" with each game.
- Similarly that 'real world' countries exist and the regions are either part of countries (Unova is a state, Kanto is in Japan, etc), a few regions replace countries while others are left alone, or they're just similar to other countries.
- The protagonists are literally Heroic Mime's. If you read the dialogue it's obvious the protagonist talks and is being replied to, it's just we're never shown it. It is possible some protagonists are quieter or less talkative than others.
- A lot of Pokedex entries are myths. Alternatively, the protagonist themselves write the entries.
- The series takes place After the End.
- It's often stated that Tauros and Miltank are opposite gender-counterparts of the same mon like the Nidoran line(s) and Volbeat/Illumise, but this has never been stated in the games or the anime. It actually has some basis in gameplay — their stats total the same, they're always found in similar/the same locations outside of Safari Zones, etc. — but, nevertheless, the fact that you can't get Tauros by breeding Miltank holds. The same applies to the Vullaby (female) and Rufflet (male) lines
- All protagonists are True Companions. Red and Leaf live in the same town and are friends, likewise with the Unova duos.
- It's never stated how Pokemon breed or even if they have genital but most people assume they breed like animals and most have sexual organs.
- Professor Oak being the rival's paternal grandfather, and as such the rival's last name being Oak. Canonized in FireRed/LeafGreen.
- The Pokémon that Bill was fused with being a Clefairy. Canonized in FireRed/LeafGreen.
- Game!Silver being Giovanni's son. Canonized in HeartGold/SoulSilver.
- Giovanni committing suicide at Tohjo Falls. Jossed in Black 2/White 2.
- The Striaton Trio is the Shadow Triad. Jossed in Black 2/White 2, though this only created a new fanon that they were replaced by a new Triad after the initial games.
- The Kanto and Hoenn games taking place simultaneously- similarly, the Johto and Sinnoh games. Canonized by a tweet from scenario writer Toshinobu Matsumiya regarding the official timeline of the games.
- Gym Leaders having multiple teams of Pokémon, with which they can provide an appropriate level of challenge to trainers of different levels. Canonized in Black 2/White 2 by Cheren's mention that he's not allowed to use his old team against you in your Gym battle against him, and is also mentioned in Pokémon Origins.
- Red is Giovanni's father. Jossed. Though you could say neither possibly know it, Red has a line clearly signifying he knows who his father is.
- Red's eye color is red while Blue's is green, and sometimes being named due to their eye colors. Jossed in all official art and sprites, which have them both with brown eyes.
- Brendan has white, or white and black hair. Jossed by Word of God that he's wearing a hat, and the remakes making it obvious (also they give him longer, brown hair.)
- Either Anthea or Concordia are N's mother. Concordia is the more common choice due to Theme Naming with N, whose full name is Natural Harmonia Gropius; Concordia is the Roman goddess of harmony, Harmonia is her Greek counterpart. This has been jossed by B/W2, as the two women reveal that all of three of them were orphans taken in by Ghetsis, thus making Anthea and Concordia N's adoptive/foster sisters.
- The infamous "Red killed Blue's Raticate" theory. It's rarely played seriously nowadays outside of creepypasta.
- It does still pop up, at least in various Nuzlocke runs, especially the more story-oriented ones. While it's still not overly common, perhaps with the players' Pokémon dying being a core concept of the genre, the Raticate might provide a nice enough callback to allow the theory one last grasp at life.
- There's one popular fanon that combines both the game's fanon with the anime's canon. Giovanni having to do with Mewtwo's creation (anime) and that all of the criminal activities that Team Rocket does were to try and stop Mewtwo once he broke free (games).
- Blue's starter is either be a Squirtle or an Eevee, with Red's being a Charmander or Pikachu.
- There's a persistent piece of fanon that there was a war that ended a few years before the game, which killed Red's dad and Blue's parents. Like the Raticate theory it's rarely brought up too seriously. (There has been one during Lt. Surge's lifetime).
- Red as a bishonen, stoic, red eyed Memetic Badass. It became so popular that at one point most fans seriously thought this interpretation - which is nicknamed "Pixiv Red" or "Uber Red" - was how Red seriously looked. Due to backlash, along with Super Smash Bros.' and Pokémon Origins'', the design is going out of style.
- People call the brunette remake Red "Fire" to distinguish him from the classic, and especially fanon, Red.
- Red and Leaf are Half-Identical Twins.
- Erika is a Lipstick Lesbian.
- It's unknown what happened to Blue's parents but it's typical for them to have died prior to the games. This is canon in Pokémon Zensho, where they got into a car crash when Blue was an infant, but never specified in other adaptations.
- Red has red eyes.
- Red is stoic and quiet. Adaptation counterparts, official art, and in-game dialogue (particularly Copycat's dialogue and Blue mocking you as a "chatty gossip") imply Red is a normal, even Hot-Blooded, kid.
- Red stayed on that mountain for three years. It's never stated that he wasn't traveling and you just met him while he was training.
- The three Pokemon that died in the Burned Tower and were revived as Entei, Raikou, and Suicune are believed to have been a Flareon, Jolteon and Vaporeon respectively. This is backed up by the three having the Eeveeloutions normal abilites as their Dream World Abilities.
- Less commonly, they're believed to have been three Eevee, and their revival is thought to have acted as powered-up Water/Thunder/Fire Stones.
- Silver having red eyes. The HGSS intro clearly portrays him with red eyes but his official art and sprites have grey, meaning the red eyes are likely an error.
- Ariana and Giovanni are Silver's parents. Given her apparent age, the fact that she's arguably second in terms of authority out of the four Executives (behind Archer, though they may be Co-Dragons), her idolization of strength, her looks, her name (Ariana is Welsh for "silver"), and the fact that she's the only female Executive period, fan speculation places her as Silver's mother (though the nature of Giovanni and Ariana's relationship is left up to personal interpretation).
- Less common but Mars is their child too, and Silver's older sister. There's a fanon that she's Roark's sister as well.
- Kris and Lyra are the same character, just redesigned like how Red got new clothes and a different hair color.
- Giovanni commited suicide during his event. Black 2 and White 2 seem to have jossed this but fans opt for Bungled Suicide.
- Kris is an In-Series Nickname, short for "Crystal".
- Morty as being The Stoner
- Brendan is presented as Birch's kid most of the time, with May obviously as Norman's.
- If so May will usually have a Torchic starter and Brendan a Mudkip.
- While it's canon Brendan is wearing a hat, some fans who like the white haired fanon version of him make him wear a beanie but also have white and black hair.
- Dawn's starter is a Piplup.
- Dahlia is latina. Canon in Pokémon Special but ambiguous in the games.
- Lucas canonically has◊ Anime Hair. Most fanart ignores it and gives him a normal, short hairstyle.
- Volkner is often associated as being a big brother figure for Meghan, the Pokekid who's in his gym.
White/Black/White 2/Black 2
- Hilbert, Hilda, Cheren, and Bianca are given a fanon age of sixteen when they start their journey.
- N is on the autism spectrum.
- If Hilbert is the protagonist Rosa is the heroine, and if Hilda is the protagonist then Nate is. This is despite the fact some dialogue implies the two Heroes are the same sex.
- Hilda and Hilbert are Fraternal Twins.
- Back when Rosa was introduced there was an error on the Japanese site that referred to her as a boy. Since then it created a boom where Rosa was presented as transsexual or a Wholesome Crossdresser.
- Cheren is sometimes depicted as transsexual as well.
- There are two Shadow Triad's. The first consisted of Cilan, Chili, and Cress. They disbanded after Pokémon Black and White and the new trio were sent to beat them.
- Due to their Strong Family Resemblance there's a small fanon that Ghetsis and N are related, just not biologically parent and child.
- Bianca's reason for being clumsy is due to poor eyesight. This is why she wears glasses in BW2
- Elesa is bisexual.
- Iris is either Black or Pokemon's version of Native American (Native Unovian?)
- Alder as Native American is popular as well.
- The games take place ten years after Platinum.
- Giovanni is Ash's father. In the non-canon Pokémon Live! it's stated he and Delia dated but fanon claims he was Ash's dad. A novelization written by Takeshi Shudo says Ash's dad was a random deadbeat, but it's only considered semi-canon as many things contradict the actual anime.
- Alternatively Oak is Ash's father.
- Ash's dad is Silver from the episode "The Search for the Legend".
- Delia and Professor Oak are romantically involved.
- There's a rampant amount of Ambiguous Gender for the anime's Pokemon. Due to this fans have to fill in the blanks.
- It's assumed most of Ash's Pokemon are male except for a few. Chikorita is all but confirmed but many people think Gligar is female due to similarities between it and Aipom. Chimchar was commonly seen as female though once it evolved it became more common for fanon to make them male.
- One Name Only is the standard for characters. Fanon has tried to give many surnames.
- May and her brother Max will have the last name "Maple".[[note]]This plays off of Brendan Birch — see the Ruby and Sapphire section above.
- "Ashton Ketchum" as Ash's full name.
- Dawn "Berlitz" as Dawn's surname, named after her Pokespe counterpart.
- Misty "Waterflower", due to a misunderstanding about her sisters title.
- Less common but "Williams" is also used often.
- Drew "Hayden".
- Giovanni's surname as "Rocketto", from the Japanese pronunciation of Team Rocket (Roketto-dan).
- Brock tends to run with the Meaningful and Punny Name theme for Gym Leaders, as "Slate". However, Eric Stuart was quoted in 2006 as claiming Brock's last name was "Harrison" in K-Zone magazine.
- Brendan is Birch's son. It makes sense considering the games but Professor Birch never mentions him and Brendan never speaks or meets Ash and co. (He only cameos in several of the movies during the Hoenn-Sinnoh era).
- Brendan is May's Forgotten Childhood Friend.
- Lucas is Barry's childhood friend and has a Chimchar starter.
- Even with people who don't ship Ash/Misty it's common for people to think Misty has an unrequited crush on Ash.
- James Trademark Favorite Food used to be donuts in the earlier days of the fandom but it has largely been forgotten.
- Pokémon Special:
- Yellow has amber, yellow, brown, or yellowish-brown eyes depending on the fan-art.
- Yellow is an incredibly Shrinking Violet.
- Red is an orphan.
- Many people call Platinum "Platina" because it sounds more feminine to them and less weird.
- Silver and Blue are Like Brother and Sister. It's ambiguous if they are or if Silver has a crush on her.
- The RS arc ends with Ruby and Sapphire being transported to an Alternate Universe, where all future arcs take place. In their 'real' universe there's still an apocalypse going on and they're presumed dead.
Common Fanfic Tropes and Occurrences
- The ever-so-popular fics detailing original characters receiving a starter, defeating 8 gyms, fighting a villain team, and becoming the Champion. Common details include:
- The normal starters being unavailable, resulting in the protagonist getting a starter outside the normal trio.
- In the early days of the fandom, this was always an Eevee. ALWAYS.
- The villain team is always Team Rocket, Cipher, or Team Plasma. (Magma, Aqua, and Galactic? Who are they?)
- The Pokemon League being anime-styled, in which there is a tournament every year or so determining who gets to fight the Elite Four.
- The normal starters being unavailable, resulting in the protagonist getting a starter outside the normal trio.
- After Action Report fics based off the writer's actual run of the game. Quality tends to vary a lot in these ones. If they ever get finished.
- In anime-based fics, an established character turning out to be Ash's father.