* AlternativeCharacterInterpretation: Philemon isn't like the Abrahamic God, being all-powerful compared to Nyarlathotep's Devil. No, Phil and Nyarly are roughly equal in power and Philemon is actually saving us by making "the bet" - because if he didn't push Nyarlathotep into accepting a game with rules, using humans as the pieces, then Nyarlathotep would just lash out first and destroy everything. This way, we get a chance and Philemon gives us the power to keep pushing back. He is still kind of a callous jerk about the damage this does to his chosen champions' lives, though.
* AnticlimaxBoss: If you prepare for the bosses, they'll become this trope. It's also possible to [[spoiler:kill 'em all with Armageddon]].
* AuthorsSavingThrow: The North American version of ''Eternal Punishment'' is a peculiar example, as it reverted the original ''Persona'''s characters back to their canonical Japanese surnames. For sake of continuity, however, the characters' first names were left Anglicized. The localization team tried to compensate for this ContinuitySnarl by retconning some of the bigger translation goofs; For example, the revelation that "Guido Sardenia" is actually an alias for Guido Kandori, the previous game's antagonist. He's still named Guido, due to Nate and co. retaining their western names, so ''Eternal Punishment'' breaks even and just calls him Guido Kandori.
* AwesomeEgo: For most of Innocent Sin Eikichi Mishina would happily talk about how awesome he is, and most of the fans of the game would agree.
* CrowningMusicOfAwesome: Many in both the PSX and PSP [=OSTs=], but the boss battle music and JOKER stand out.
* EnsembleDarkhorse: While this may be the one Persona game without a single [[TheScrappy scrappy]], [[DreadfulMusician Eikichi]] and [[{{Adorkable}} Katsuya]] are absolutely ''adored'' by the fandom, to the point that the idea of them returning as DLC or in a sequel to ''Persona4Arena'' has them ''stoked''.
* HoYay: Jun Kurosu, who ''definitely'' sees Tatsuya Suou as more than a friend.
** Parts of the game and [[WordOfGay interviews]] would imply Suou and Kurosu are the intended ''Innocent Sin'' pairing. Specifically scenario designer Satomi Tadashi [[note]]Interestingly enough, he seems to ship both Tatsuya/Maya and Tatsuya/Jun [[/note]] and character designer Kaneko Kazuma.
* LesYay: Yukino and Anna in ''Innocent Sin''. [[spoiler: If you pick the wrong choice to leave Yukino behind at the entrance to Caracol, you encounter Shadow Yukino and Anna instead of the Longinus mechs, at which point Shadow Yukino [[https://www.youtube.com/watch?v=0Nlaazca4Y4#t=76 kisses]] Anna. After the battle, Anna will jump off the bridge in Caracol holding hands with Shadow Yukino, who convinced her to do it so that they would be together forever. If you bring Yukino, she will, after you fight Joker, give her Persona ability to Jun and go off into the city to fight Nazis with Anna, who has promised to look after her now that she doesn't have her Persona anymore]].
* MemeticMutation: Let's positive thinking!
* MoralEventHorizon: [[spoiler: Believing and support in the apocalypse started by Nyarlathotep would be bad enough, but Okamura definitely crosses one when she stabs Maya with the spear of Longinus, killing her in ''Innocent Sin''.]]
* {{Narm}}: Hitler wearing sunglasses in the PSP remake.
* NeverLiveItDown: Even if Philemon is the personification of human's goodness and tried his best to help the heroes against Nyarlathotep [[GodsHandsAreTied with his hands tied]], good luck finding people who won't consider him a jackass because he made the bet with Nyarlathotep in the first place.
* SophomoreSlump: ''Eternal Punishment'' is generally considered to be the ''Return of the Jedi'' of the two, as it can't quite measure up to the pathos of ''Innocent Sin''. It doesn't help that half the game is dedicated to the events of Persona ONE.
* ThatOneBoss: The FinalBoss of Innocent Sin, Great Father [[spoiler: Nyarlathotep]]. He can launch five attacks in one turn and will pretty much annihilate you unless you're at a high level. In Eternal Punishment [[spoiler: the Metal Trio]]. They don't have much HP, but they're immune to physical damage all have really strong attacks that hit your whole party.
** ThatOneAttack: One of the Bolontiku in Innocent Sin and [[spoiler: Metal Jun ]] in Eternal Punishment have an attack in their respective games called "Terror Fortune" which deals moderately high [[BlowYouAway Wind]] and [[CastingAShadow Dark damage]] to the entire party, which isn't so bad. The problem is that it [[FromBadToWorse ALSO]] inflicts [[StandardStatusEffects random ailments on your party]], including [[InstantKO instant death]]. Have fun keeping your party alive...
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