History Trivia / KingdomHeartsBirthBySleep

** The ''HD 1.5 + 2.5 [=ReMIX=]'' release replaces David Gallagher as [[spoiler:the younger Xehanort]] with Creator/BenDiskin to avoid continuity issues with his appearances in ''Dream Drop Distance'' onwards.

** The Jump Festa trailer features a scene where Ventus sees Cinderella arrive at the ball; in the final game, Ven exclusively explores Cinderella's house and cannot visit the palace.

** Nomura confirmed that the culprit who stole Aurora's heart was actually Master Xehanort and Maleficent.
** The Flood Unversed represents the negative emotion of irritation.
** The hero that Zack says Terra reminds of him is Sephiroth. Nomura goes on to explain that since the game is set a decade before ''[=KH1=]'' and ''[=KH2=]'', it is unclear if Sephiroth was a being of darkness at this point.

** When asked why Xemnas doesn't seem to wield a Keyblade when his human self could, Nomura stated that it was possible that Xemnas could have used a Keyblade, but intentionally didn't for some reason.

* IKnewIt:
** [[spoiler:Terra turns into Xehanort!]]
** [[spoiler:Ven becomes a part of Sora.]]
** [[spoiler:Sora's gonna save Terra, Aqua, and Ven from their fates.]]
** Some fans speculated about a possible connection between the armor Xemnas wears in ''Kingdom Hearts II'' and the armor the protagonists of this game wear. [[spoiler:''Final Mix'' adds the No Heart boss, confirming that Xemnas's armor was Master Xehanort's Keyblade Armor.]]

** Creator/JimCummings returns as WesternAnimation/{{Pete}}, [[WesternAnimation/WinnieThePooh Winnie the Pooh, and Tigger]].

** Another Titan from ''WesternAnimation/{{Hercules}}'' was considered to be added as a BonusBoss in the ''Final Mix'' version instead of Monstro.

** The encounter with the BonusBoss called Unknown is canon for all of the characters. It's supposed to happen just before each character heads to the Keyblade Graveyard for the final time.

** Creator/EmilyOsment was rumored to voice Aqua, but she was later casted by Creator/WillaHolland in the final game. A missed opportunity, as it would have lead both Osments to be in ''VideoGame/KingdomHeartsIII''.

* TalkingToHimself: Russi Taylor plays Minnie Mouse, Huey, Dewey, and Louie, who all interact in Ventus's story.

* NamesTheSame: One of the {{Bonus Boss}}es in the ''Final Mix'' version, No Heart, shares his name with an antagonist from ''Franchise/CareBears''.

* RealLifeRelative: Creator/ChikaoOhtsuka was chosen as the voice of Master Xehanort specifically for his relationship to Creator/AkioOhtsuka, the previous voice of Xehanort and Ansem, Seeker of Darkness, [[spoiler:who is actually Master Xehanort in Terra's body]].

** Certain cutscenes which appeared in early trailers - shown at events such as the Tokyo Game Show and Jump Festa - were later altered for the game's final release. For example, the scene in which Master Xehanort [[spoiler: reveals his plan to forge the χ-blade to Ventus]] was originally meant to appear in Olympus Coliseum, rather than the Keyblade Graveyard. A scant few scenes were also omitted, including one where Terra watches a young Sora and Riku partake in a swordfight, as well as individual lines, such as Terra telling Aqua that searching for the light Master Xehanort is after will lead them to him or Ventus at Destiny Island telling Aqua to erase him.

* QuoteSource:
** ThePowerOfFriendship

*** Russi Taylor voices [[WesternAnimation/{{Cinderella}} the Fairy Godmother, Drizella]], and [[WesternAnimation/SleepingBeauty Fauna]], [[WesternAnimation/MinnieMouse Queen Minnie]], and Donald's nephews.

* FanNickname:
** [[spoiler:Terra-Xehanort]] is often referred to as [[spoiler:Terranort]].
** [[spoiler:Ventus-Vanitas]] is sometimes called [[spoiler:Venitas]].
** Before names were released, Master Xehanort was referred to as OBM (Old Bald Man; in the vein of BHK/Blond-Haired Kid for Roxas). When his name was released, we got affectionate nicknames such as Baldinort, Baldsem, Geezernort, Oldynort, and Grampinort.
** In a similar vein to the above, before Vanitas' name was revealed, he was referred to as DSU (Dark-Suit Unknown, or Dark-Suited Unknown).
** [[spoiler:There's the CaptainObvious-styled Evil Sora for Vanitas. The epilogue also gave birth to ''KH'' Jesus for [[MessianicArchetype Sora]], as well as Jesusora]].
** A less common one for Vanitas: [[spoiler:Soranitas]].
** "Red Eye" and "Hunter of the Dark" for the [[spoiler:Heartless that serves as the boss of the Secret Episode, later given the canon name Dark Hide]].
** Prior to the release of ''Kingdom Hearts Birth by Sleep & 358/2 Days Original Soundtrack'', the song "Black Powder" [[note]]which plays during Terra's boss fight with Braig, Terra's boss fights with Vanitas and Master Xehanort, and on all three paths during the cutscene at the Keyblade Graveyard that recreates the ''Birth By Sleep'' FMV from ''Kingdom Hearts II: Final Mix+''[[/note]] was often referred to by fans as "A Battle of Great Valor".
** Thanks to the Kingdom Smarts podcast Ventus has gained the nickname Baby. This stems from Jake first seeing the wayfinder trio in KH2’s secret ending. Due to Shannon’s policy of not revealing character names to him until they are given in the games Jake dubbed the trio Big Boy (Terra), Lady Armor (Aqua) and Baby (Ventus, due to him being smaller than his companions and the trio giving off a father-mother-child vibe). Since Ven’s name isn’t spoken in the game until after the prologue on Destiny Islands he’s referred to as Baby during most of that podcast episode and the nickname then stuck both on the podcast and with fans.