- Bad Export for You: The worldwide release of Innocent Sin for PSP massively cut down the Theater side quest; the Quest Creation feature was removed, and the official DLC quests were not localized.
- Cross-Dressing Voices: Jun in the English version, for some reason. The Japanese PS1 releases of Innocent Sin and Eternal Punishment gave him a reserved but definitely-masculine voice, while the PS1 dub of Eternal Punishment gave him a female voice actress. This is, however, completely averted in the Updated Re-release of Innocent Sin, where his current dub actor's voice matches the original much more closely.
- Fan Translation:
- Network to the Rescue: 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.
- No Export for You: 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 due to unspecified "unusual circumstances", making it the only Persona game never to receive a release in Europe in some capacity.
- The Other Darrin: For Maya, Dorothy Elias Fahn replaces Lani Minella in the US for the PSP version.
- Relationship Voice Actor: Takehito Koyasu as Tatsuya, Akiko Yajima as Maya. So, uh, Zechs? Why is Relena now your Cool Big Sis instead of your little sister?
- What Could Have Been:
- Supposedly, the player could have influenced Joker's One-Winged Angel form by spreading rumors describing the Joker as angelic or devilish. The NPCs that reference this are still in the game, and both the concept art and a sprite of the Joker's "devil" form still exist, but there's no way to influence his appearance.
- A find in Eternal Punishment almost 20 years later—apparently, Jun was originally planned to be the protagonist. Or at least a Guest-Star Party Member.
- If the trailer contained in Eternal Punishment is to be believed so was an anime adaptation titled Another Self planned of these games at some point but for some reason never materialized.
- Word of Gay: A lot of this. The character designer, Kazuma Kaneko, supports the pairing of Jun and Tatsuya, and he also presents a pretty good case for them to the scenario writer in the interviews. And let's not even go into the drama CD—baby chickens are a really big deal.
Trivia / Persona 2