* AuthorsSavingThrow: Although it doesn't come out and say this, ''[[UpdatedRerelease Ragnarok]]'' shows that Demon Prier [[spoiler: can appear as an EnemyWithout]], explaining Prier's changes in her ''Franchise/{{Disgaea}}'' cameos.
* EvilIsSexy: Eclair's SuperpoweredEvilSide wears nothing but lingerie. Demon Overlord Prier is also considered this.
** [[BiggerBad Calamity]] is this as well. She wears almost NOTHING.
* FlipFlopOfGod: NipponIchi can't seem to decide if Prier retains her personality from ''La Pucelle'' or desires to turn worlds into [[MemeticMutation seas of blood]] even after the release of ''Ragnarok'', with both personalities showing up in ''VideoGame/{{Disgaea 3|AbsenceOfJustice}}'' and ''VideoGame/{{Disgaea 4|A Promise Unforgotten}}'' (Although her cut scenes start with her SuperPoweredEvilSide being dominant). In fact, ''VideoGame/{{Disgaea 4|A Promise Unforgotten}}'' even gives you the option of switching between both sides when reincarnating her.
** ''[[VideoGame/DisgaeaDimension2 Disgaea D2]]'' seems to have settled things by having ''both'' forms of Prier be playable.
* GrowingTheBeard: Arguably a case of this for NipponIchi, as most of their later games borrowed mechanics from this one.
* MagnificentBastard: Noir. [[spoiler: He pulled an EvilerThanThou on the supposed AntiChrist]]
* MoralEventHorizon: Noir all around acts far more cruel in the Overlord Prier storyline [[spoiler: but he really crosses it in the Bad Endings where he kills Croix right in front of Prier.]]
* TheUntwist: [[spoiler: Alouette turning out to be the Maiden of Light and Croix turning out to be the Dark Prince.]] The game does such a poor job of keeping this a secret that in the [[http://lparchive.org/La-Pucelle-Tactics/ LP archive]] let's play of the game, which depicts the plot as Prier telling a story of the game's events to the cast of the original Disgaea, Laharl figures it and tries to say it, but Prier stops him.
* WhatAnIdiot: [[spoiler: In the good ending to the Demon Overlord Prier storyline, Noir tries to pick a fight with Prier and Croix, despite that Prier just showed that she was strong to PURIFY THE DARK PRINCE without killing him, and Croix still having all the powers he had as the Dark Prince.]]