Games with their own pages:
- Marth, Roy, and Ike are often believed to have a connection with each other because of Super Smash Bros. In reality, their games don't even take place in the same universe, though the Canon Welding Awakening implies a great degree of interconnectivity between these different Fire Emblem universes all the same, with later installments and media (Fates, Cipher, Heroes, Shadows of Valentia, Warriors, Engage, etc.) following suit in some way or another. Many Fire Emblem characters, including Marth, Ike, and Roy also all appear in Awakening as DLC characters, though these are apparitions known as "Einherjar" modeled after ancient heroes rather than the actual characters themselves.
- If an Avatar has the chance to be either male or female, fans usually split the original and localized names between them: other than the case of Morgan/Mark as detailed in the Awakening section, their parents will be referred to as Robin if male and Reflet if female. The male Avatar of Fates will usually get the name Corrin while the female gets Kamui (though dubbing the female Corrine or Corrina are common but slightly less-used alternatives). The Summoner in Heroes will be referred to as Kiran if male and Ekura/Eclat if female. Despite being the progenitor of the modern Avatar system, Chris/Kris from New Mystery is often forgotten, likely owing to their game's No Export for You status. Mark, the first real Avatar (albeit as a non-playable tactician), doesn't have this distinction, sharing default names in all regions.
- It's not unusual for fans to connect their Avatars together through one means or another. Such as Robin being a descendant of Kris, or Mark, Kris, Robin, and Corrin being the same reincarnated soul. Or some combination of the two options. It helps that Awakening gives players the option to agree with an idea raised by (an Einherjar of) Lyn and tell her that they are her tactician (see the Awakening section below for more details), whereas Fates likewise teases the possibility of Robin and Corrin being the same soul without outright confirming anything, choosing to leave it up to player interpretation. Kiran and Byleth, however, seem to be exempt from this, though not always, likely because of no obvious connection to past games in Byleth's case (not counting Anna's usual appearance).
- A lot of pairings from any of the games are treated as the "defaults" in fan works due to their popularity; Azelle/Tailtiunote , Eliwood/Ninian, Seth/Eirika, Boyd/Mistnote , Lissa/Lon'qu, and Male Avatar/Azura are among the most commonly assumed to be fully canon despite the option to A/S Support the characters with other people.
- Fire Emblem: The Blazing Blade:
- After the release of Awakening, it's common to think of the Dragon's Gate as an Outrealm Gate connected to Archanea, the world of Marth's games. This is because dragons are all but wiped out in Elibe, but are said to be plentiful in the world beyond the Dragon's Gate, as well as Fire Emblem Fates having a Dragon's Gate that functions the same way as Awakening's Outrealm Gate.
- There are many fanon theories about what happened to the cast of the game during the 20-year Time Skip between it and Fire Emblem: The Binding Blade. Lucius is often assumed to be the caretaker of Lugh and Raigh's orphanage who was killed during Bern's invasion, since his The Blazing Blade ending mentions him opening an orphanage. Guy is assumed to have been killed in a duel with Karel some time after The Blazing Blade (their A Support has them promising to duel someday), and Karel's guilt over this is said to have been a factor in his Heel–Face Turn between games (along with his sister's death from illness).
- Similar to Ike below (albeit to a much lesser degree), it's not uncommon for fan works to depict Mark the Tactician (aka you) as Walking the Earth post-game, owing to how they disappear after the events of the story despite being named the godparent of either Roy or Lilina and promising to meet up again with Eliwood or Hector in the future. In the event this leads to them crossing over into another world, this usually is combined with the above "Dragon's Gate = Outrealm Gate" theory. Notably, Awakening gives the player the option of implicitly canonizing this idea in their playthrough, with the added wrinkle of making Mark and Robin the same character.
- In a Support conversation between Klein and Clarine in The Binding Blade, Klein calls Clarine out on making another healer cry for healing Klein before Clarine had a chance to. The identity of this healer is not stated, but is usually assumed to be the Cleric Ellen, as she is the only other notable female healer to be enough of a Shrinking Violet to take that treatment from Clarine.
- Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn:
- Occasionally, the fact that Ike canonically departs from Tellius at the end of Radiant Dawn for parts unknown is used to have him cross over into other Fire Emblem universes (or new ones entirely). Fire Emblem: Awakening does something similar. In one of the SpotPass sidequests Chrom meets a character named Priam who wields Ike's sword Ragnell and claims to be the descendant of the "Radiant Hero" who traveled to Archanea from another world.
- It's also popular to use "Greil" as Ike and Mist's last names, when it is actually just their father's alias. This is especially popular in Alternate Universe fan works.
- Shinon and Gatrie's Support conversations in Path of Radiance involve Gatrie seemingly meeting the girl of his dreams, only for it to be revealed that she's actually a scam artist trying to con him out of all his money. Many fans believe this woman was none other than Heather, a female thief introduced in Radiant Dawn who frequently seduces men to get them to do her bidding. It's never directly stated in the game, but it just really sounds like something she'd do.
- Fire Emblem: Awakening:
- The Avatar and/or their child Morgan are hinted to have a connection to the Tactician from The Blazing Blade. Similar clothing and map sprites aside, Lyn's Einherjar has a hunch that the Avatar and Tactician might be one and the same (she recognizes them on sight and feels even stronger about her convictions upon learning the Avatar woke up in a strange place with no recollection of how they got there, just like her Tactician; the player can either confirm or deny her suspicions), whereas Morgan's name in the Japanese version is Mark (albeit spelled as "Marc"). Both characters also have access to the Grandmaster class, which was the title awarded in the Japanese version of Blazing Sword for obtaining the highest Tactician ranking. Where fanon comes in is fairly variable, though it usually settles on "Robin = Mark" due to the aforementioned exchange with Lyn, sometimes framing the meeting between Mark and Lyn as the result of the Avatar's mother crossing through the Outrealm Gate after fleeing Plegia in her attempts to safeguard her child from Validar and the Grimleal (thereby making Blazing Sword something of a Non-Linear Stealth Prequel to Awakening).
- Thanks to The Future Past DLC chapters and their use of both the male and female Morgan as bosses, fans began to latch onto the idea that the Avatar actually had twin children instead of a child of the opposite gender, so as to use both Morgans. The female Morgan usually keeps her name, whereas the male one gets his Japanese name, Mark.
- Furthermore, thanks to the conversations in the Hot Spring Scramble map between the male Morgan and Inigo or the female Morgan and Cynthia where it is revealed that the Morgan has an exact extra copy of their parent's tactics book, many fans have began to believe that the Morgan we get and recruit is actually from the Future Past timeline as if the Avatar stands next to the opposite gender Morgan during The Future Past (i.e. the same gender as our Morgan), a conversation will play out where the Avatar gives the Morgan their tactics book and Morgan will reveal she already has the exact same one (presumably from the Avatar of the Future Past timeline).
- The supposed "Love Triangle" between Chrom, Cordelia and Sumia, so frequently used to bash one of the ladies to favor one couple... doesn't actually exist in canon. In reality, not only can both girls end up with other guys than Chrom depending on which Supports the player gets, but Cordelia and Sumia are shown in their Supports to be good friends, and Chrom isn't even mentioned in their talks.
- Grima as a redeemable character. The only support that really exists for this is Fire Emblem Heroes, which is deuterocanonical and was responsible for the derailment of several other characters. In Heroes, Grima's confessions are sympathetic. Male Grima talks about how Humans Are the Real Monsters and explains that that's why he became a villain, while Female Grima mentions that she hopes to unite humans and dragons through destruction. That said, in Awakening they have no redeeming qualities. They were responsible for an untold amount of destruction, and even their Heroes versions are Card-Carrying Villains who express doubt that the Summoner will ever show them the power of love and compassion.
- Given Lucina is The Stoic, mature for her age, and the times she smiles are few and far between, fanon will often portray her as more positive, curious and cute. Heroes seems to have made this Ascended Fanon given Lucina is more cheerful in some of her variants.
