* CrossDressingVoices: Surprisingly, Jun in the English version. In the Japanese ''Innocent Sin'', he is given a very deep but reserved voice. When a replica of Jun is faced as a boss in ''Eternal Punishment'', he is given the voice of a young girl in the English dub.
* FanTranslation: ''Innocent Sin'' got one a few years prior to its UpdatedRerelease, and not only was Atlus aware of it, [[ApprovalOfGod they gave it props for quality and accuracy.]]
* GeniusBonus: There's several small bits of trivia, ranging from Aztec mythology to the significance of the name Maya and Maia.
** The publishing company Maya works at, Kismet, is a synonym for "destiny".
*** And, of course, all the Personae (except Tatsunoshin Suou, Maihime Amano, Junnosuke Kuroda, and Alfred/Yamoaka from ''Eternal Punishment'') are from real mythologies.
* NetworkToTheRescue: Since the remake of ''Eternal Punishment'' was not going to be localized, Sony instead decided to release the original [=PS1=] version on PSN for those who wanted to play it.
* NoExportForYou: The original release of ''Innocent Sin'' was never released outside of Japan, whilst ''Eternal Punishment'' was also released in America. The ''Innocent Sin'' remake for PSP was released worldwide, but the ''Eternal Punishment'' remake has not been released outside of Japan, making it the only ''Persona'' game never to receive a release in Europe in some capacity.
* OneHitWonder: Ginji.
* TheOtherDarrin: For Maya, WendeeLee replaces Lani Minella in the US for the PSP version.
* RelationshipVoiceActor: TakehitoKoyasu as Tatsuya, AkikoYajima as Maya. [[Anime/MobileSuitGundamWing So, uh, Zechs? Why is Relena now your]] CoolBigSis [[Anime/MobileSuitGundamWing instead of your little sister?]]
** Also, Tekkaman Evil and Blade can potentially team up to fight the Nazis!
* WhatCouldHaveBeen: Supposedly, it was planned that you can influence [[spoiler:Joker's OneWingedAngel form by spreading rumors that the Joker is like an angel or like a devil]]. The [=NPCs=] that reference this are still in the game, and both concept art and a sprite of [[spoiler:the Joker's "devil" form]] exists, but it doesn't manifest as a rumor.
* WordOfGay: A lot of this. The scenario designer, Satomi Tadashi, supports the pairing of Suou and Kurosu, and he even managed to ''change the character designer's own opinion of the pairing in one conversation.'' And let's not even go into detail about the drama CD, whoa baby. Baby chickens are a ''really big deal.''