Events connecting the games. {{DLC}} and VideoGameRemake often have references to games made later chronologically, leading to ContinuityDrift.

! Game Trivia
'''Marl Kingdom'''

''RhapsodyAMusicalAdventure''
* Commoner Cornet rescues Prince Ferdinand from VainSorceress Marjoly and her minions; Gao the Wolf Girl, Crowdia the Crow Girl, and Mao the Cat Girl.
* Etoile Rosenqueen is heir to a world-wide merchant family.

''[[NoExportForYou Little Princess: Marl Ukoku no Ningyou Hime 2]]''
* 12 years later, Kururu; Cornet and Ferdinand's daughter finds and falls in love with Cello; the son of a rival witch to Marjoly.

''[[NoExportForYou Tenshi no Present]]''
* 12 years again later, Kururu and Cello marry. Their child is Homard.
* Through TimeTravel; all of the heroes of Marl Kingdom band together to defeat the Demon Overlord of their world.
* Introduction of the character [[SpellMyNameWithAnS Elly/Erie]]

'''LaPucelle'''
* Prier gets involved in the eternal struggle between the Dark Prince and Maiden of Light; and changes it drastically.
* Elly/Erie from '' Tenshi no Present'' appears as the Rosenqueen shopkeeper.
* Prier kills one too many Demon Overlords in the Dark World and becomes one herself. Expanded in Ragnarok.
* Homard goes on a quest to defeat Demon Lords threatening his father; and becomes a SkyPirate. He meets and decides to wed Princess Eclair; who has an EnemyWithout ("Dark Eclair") who she had fused with.
* The Rosenqueen Trading company has taken capitalism to the extreme; and buys and sells with the Netherworld.
* Baal is first seen as a BonusBoss; curiously as only a Demon Lord. Prier could capture him if she's a Demon Overlord and sell him to slavery to the Netherworld, but he would quickly rise up the ranks to Overlord.
* PSP [[VideogameRemake remake]] ''[[NoExportForYou La Pucelle: Ragnarok]]'' has the following:
** Laharl, Etna, and Flonne (Fallen Angel version) as {{Bonus Boss}}es and {{Optional Party Member}}s.
** An additional storyline involving Demon Lord Prier.
** {{DLC}} {{OptionalPartyMember}}s include
*** Erie, the shopkeeper.
*** [[VideoGame/PrinnyCanIReallyBeTheHero Hero Prinny]]
*** [[RhapsodyAMusicalAdventure Cornet]] (presumably time travel is involved again).
*** [[VideoGame/Disgaea2CursedMemories Rozalin]]

'''VideoGame/DisgaeaHourOfDarkness'''
* Demon Prince Laharl wakes to find his netherworld in chaos because his father has died (killed by Baal, but this was hidden). He strives to become the next Demon Overlord of his Netherworld; he is "assisted" by his father's former vassal Etna. Angel Trainee Flonne comes to the Netherworld on orders to assassinate Laharl's father; but this was all part of a complex plot.
** Etna herself has a little boy demon minion named Aramis who is obsessed with Zombies.
* It is revealed that there is more than one Netherworld, and they are at constant war.
* Laharl's Netherworld is close to a ZeeRust version of Earth where CAPTAIN GORDON, DEFENDER OF EARTH is sent to defeat him; he gets enslaved by Laharl instead. Gordon's RivalTurnedEvil, Kurtis; challenges them but after a HeelFaceTurn dies heroically. He does, however, return as a Divine Prinny to do good deeds to pay off his karmic death; he heads back to Heaven after he is done but....
* Laharl becomes Overlord, Flonne becomes the multiverse's happiest FallenAngel (and still LoveFreak), and Laharl's father; disguised as a CampGay figure named [[strike:Vyers]] Mid-Boss. Despite accomplishing his objectives and heading to the afterlife.....
* Plenair introduces you to the Dark Assembly.
* Marjoly from ''Marl Kingdom'' is a BonusBoss and OptionalPartyMember and is described as "the most powerful witch in the Galaxy."
* Demon Overlord Prier is also an BonusBoss and OptionalPartyMember.
* Baal is now a Supreme Overlord; and threatens multiple Netherworlds at once as a legendary BonusBoss. Killing him only turns him into a Prinny.
* Etna makes an offhand joke about "Pringer X"; a robotic monster Prinny.
* The Prism Rangers; knockoffs of the PowerRangers; harass the party.
* The Etoile is the strongest type of gun, obtainable only by stealing from the Item God of a Legendary Second Best Gun.
* The Yoshitsuna, named after the head writer, is the strongest sword in the game, again to be stolen from an Item God in the Second Best Sword.
** PSP VideogameRemake Only
** A fight with Zetta still in book form from ''MakaiKingdom'', Pram is manipulating Zetta into such fights.
** A fight with Adell and Rozalin from ''VideoGame/{{Disgaea 2|CursedMemories}}''. It is likely that they are only Demonhall Mirror Copies.
*** DS VideogameRemake Only: Adell, Rozalin, Plenair, and Zetta are {{Optional Party Member}}s.

'''PhantomBrave'''
* A human girl named Marona has the power to summon Phantoms of the dead. Her best friend is a young man named Ash who was killed alongside her parents; but they raised him as a Phantom so that she would not be alone. Despite her world of Ivoire not trusting her; she eventually defeats a demonic monster called Sulphur and gains everyone's trust.
* Plenair is seen in the background in the city of Monetopia.
* Marona befriends a LittlestCancerPatient named Castille; who finds a way to communicate with forest creatures called "Puttys" who can open portals to other worlds.
* Castille has a Usagi doll among her other stuffed animals.
* Marona has a rival named "Walnut" who steals jobs from others. Walnut uses his special Burgundy power to push himself and Sulphur into a portal into the Void Between The Worlds and have the Puttys shut it behind him.
* Despite this sacrifice, Sulphur returns at full power as a BonusBoss due to Lujei.
* Laharl, Etna, and Flonne from all appear as {{Bonus Boss}}. After Laharl continually picks fights with Marona and LevelGrinding when he doesn't win; Ash decides to pretend that Laharl beat them. To look over "his new Vassals", Laharl and co leave Phantom Copies of themselves.
* Vyers from ''[[VideoGame/DisgaeaHourOfDarkness Disgaea: Afternoon of Darkness]]''. He also tests Marona, and also leaves her a Phantom copy of himself.
* Nyao; from ''RhapsodyAMusicalAdventure'' is a BonusBoss and OptionalPartyMember. She actually uses her powers to turn herself into a Phantom, so she is not a copy.
* Baal has taken the form of a Funguy; but is defeated as a BonusBoss. Is also an OptionalPartyMember, though his joining Marona's party is portrayed as sinister.
* Pringer X is a BonusBoss; a character from one of Etna's chapter goofball stories.
* The Wii VideogameRemake subtitled ''We Meet Again'' adds the following
** Addtional {{BonusBoss}}es Pringer XX and Pringer XXX
** The "Another Marona" story, an additional storyline taking place in an AlternateUniverse. In addition to the version of Marona present in the story, it also introduces [[spoiler: another AlternateUniverse version of Marona, called Carona]].
** The [=PSP=] port of the Wii version includes the following {{BonusBoss}}es and {{OptionalPartyMember}}s
*** [[VideoGame/PrinnyCanIReallyBeTheHero Hero Prinny]]
*** [[MakaiKingdom Zetta]], in book form
*** [[ZettaiHeroKaizouKeikaku The Unlosing Ranger]]
*** A playable Castille, having time traveled from her MakaiKingdom appearance.
*** Asagi.

'''MakaiKingdom'''
* Zetta, "the most Badass Freakin (Demon) Overlord In The Cosmos", has to take a form of the book that holds his universe together when he destroys it; just like Demon Overlord Pram planned. Other Overlords of other Netherworlds interact to see if they can benefit from the situation. While it is possible to recover Zetta's body; he's still a book in later cameos until Disgaea 4.
* Zetta is the Maijin class from ''Franchise/{{Disgaea}}''.
* Dark Lord Valvolga is mentioned as being used as a Final or Ultimate Boss in other games.
* Castille from ''PhantomBrave'', now able to walk, is journeying with Marona to find the soul of Walnut; who they suppose is dead. A bad encounter with Zetta leaves her stranded as one of his Vassals.
* Asagi, the supposed heroine of "Makai Wars", the "next Nippon Ichi game (not)" is defeated by Zetta and he prevents her game from ever being made.
* Laharl, Etna, and Flonne are {{Bonus Boss}}es and {{Optional Party Member}}s. They are hunting Baal; if they find Baal in Zetta's old body; they actually destroy the body. This is apparently not {{canon}}.
* Baal is revealed to be as old as the universe, and whenever one body dies; he just [[BodySurf possesses]] another. Since Zetta's body didn't have a soul in it; it was extremely convenient.
* One of the classes available is "Combat Chef". We'll see this class again in ''VideoGame/{{Disgaea 3|AbsenceOfJustice}}''[='=]s Mr. Champloo.
* The Yoshitsuna is an ''airplane'' driven by the Prinny form of Baal.
* The {{PSP}} port will has an [[AnotherSideAnotherStory alternate storyline]] starring a new girl named Petta [[spoiler: who claims to be Zetta's KidFromTheFuture.]]

'''VideoGame/Disgaea2CursedMemories'''

* Demon Hunter Adell is [[spoiler: not]] the last human on Veldime; Demon Overlord Zenon [[spoiler: not]] has cursed the humans into becoming demons. Through a summoning ritual gone wrong [[spoiler: not]], Adell summons the haughty and busty daughter of Zenon [[spoiler: not]], Rozalin and she leads him to Zenon. [[spoiler: Yes.]]
* Adell is helped by cute ninja demon girl; Yukimaru, Rozalin's servant turned frog Tink, and Adell's own brother and sister; Taro and Hanako (who have been demons all their life and don't mind, but want to help Adell out.) And Etna from ''VideoGame/{{Disgaea|Hour of Darkness}}'', who has had a falling out with Laharl over food and wants to become a Demon Overlord herself and killing Zenon will be just the ticket.
* Laharl appears and interferes with their quest, but complications with Zenon sends him running for the hills. He and Flonne are later {{Bonus Boss}}es and {{Optional Party Member}}s.
* Adell and Rozalin deal with Zenon and everyone starts turning human. Since Hanako didn't want to be human, she leaves with Etna to become a Demon Lord.
* The demon Dark Hero Axel messes around with Adell as a washout at first; but eventually recovers his past glory.
* Pleinair is a newscaster for the Netherworlds; along with her companion Usagi the Rabbit. Their programming also includes sections from [[MakaiKingdom Alex and Pram]].
* The Prism Rangers return.
* Zetta is a BonusBoss; still in Book Form; still being messed with by Pram.
* Demon Overlord Priere is an BonusBoss, and a continuing encounter in the Dark World if her proposal for blood is passed by the Dark Assembly. Beating her the first time only causes her to powerup, but she flees when she sees Rozalin's seal.
* Marjoly is a BonusBoss; but is under a curse where she cannot speak. She didn't speak in ''VideoGame/{{Disgaea|Hour of Darkness}}'' either; but after losing to Adell and Rozalin, the curse starts to become broken.
* Baal is encountered multiple times, and there is more than one of him.
* The Yoshitsuna is again the most powerful sword and is gained from an Item God from the second most powerful sword in the Land of Carnage. The Etoile gun also makes a reappearance.
* Asagi is a BonusBoss, and is still mad at Zetta for ruining her chance at having her own game.
* Gordon and Prinny Kurtis are struggling against Earth's attempts to mass-produce Defenders of Earth as robots based on Kurtis's old human self. Naturally, AIIsACrapshoot.
* Several of the Demon Overlords from ''MakaiKingdom'' are summoned in the animations for the most powerful elemental spells. Pram and Alex are also mentioned in one of Usagi's news reports.
* PSP VideoGameRemake ''Dark Hero Days''
** Asagi is an OptionalPartyMember. She can become humanoid if her Dark Assembly bill passes. (She wasn't originally humanoid probably because she died in ''VideoGame/PrinnyCanIReallyBeTheHero'')
** Aramis appears before the Council to shill ''VideoGame/PrinnyCanIReallyBeTheHero''.
** The Ronin class and Entei Demon class are available if one has a ''[[VideoGame/DisgaeaHourOfDarkness Disgaea: Afternoon of Darkness]]'' saved game, and the Angelic Host are available after defeating one in "Axel Mode".
** CAPTAIN GORDON, DEFENDER OF EARTH from the first ''VideoGame/{{Disgaea|HourOfDarkness}}'' is an OptionalPartyMember as well as Vyers/Midboss.
** Mao, Raspberyl, and Mr. Champloo from ''VideoGame/{{Disgaea 3|AbsenceOfJustice}}'' are {{Optional Party Member}}s.
** Saber Kittys from ''PhantomBrave'' are an unlockable class.
** Demon Overlord Priere is an OptionalPartyMember and her infamous "Sea of Blood" bill is {{retcon}}ned out.
** Zetta is an OptionalPartyMember.
** Axel gets his own Chapter, which introduces the characters Pink, Main Hero B and Actress.
** ''Dark Hero Days'' {{DLC}} {{Optional Party Member}}s
*** Dark Eclair from ''LaPucelle'', [[{{NoExportForYou}} Japan-only]]
*** Ash And Marona from ''PhantomBrave'' (who are pulled from during the plot of Phantom Brave via TimeTravel.)
*** Gig from ''SoulNomadAndTheWorldEaters'', [[{{NoExportForYou}} Japan-only]]
*** Pram from ''MakaiKingdom''
*** Plenair
*** Princess Sapphire and Almaz from ''VideoGame/{{Disgaea 3|AbsenceOfJustice}}''
*** Miabelle from the then-upcoming game ''[[RhapsodyAMusicalAdventure Princess Antiphona]]'', [[{{NoExportForYou}} Japan-only]]
*** Demon Lord Hanako (Hanako from ten years in the future. She returns to her own time but leaves behind a Phantom copy of herself.)
*** And Pringer X, but as a BonusBoss, not an OptionalPartyMember.

'''VideoGame/GrimGrimoire'''
* A magic school has a new witch student going through a GroundhogDayLoop to stop a Devil King and a Dark Mage Lord from reviving. What's important to other NipponIchi games, though, is that the Ghost Witch Lujei Piche escapes from the magical authorities by fleeing into the Void Between The Worlds.

'''SoulNomadAndTheWorldEaters'''
* A young girl (or man, if that's what you choose the gender as) named Revya in later references is entrusted with a sword containing the soul of TheGrimReaper who once tried to conquer the world of Prodesto with servant monsters called World Eaters. Unlike most Grim Reaper; Gig is very, very loud and obnoxious and awesome. Should Revya not fall into temptation, though, Gig becomes somewhat of an earnest ally, though still obnoxious. Revya uses Gig's power to defeat the World Eaters and the beings that corrupted Gig in the first place.
* The hero Endorph is revealed to actually be Walnut from ''PhantomBrave''. After falling into the Void Between Worlds with Sulphur, they are both rescued by Lujei Piche from ''VideoGame/GrimGrimoire'', who sends Sulphur back to Ivoire (that's why he's a BonusBoss in that game too) and sends Walnut to Prodesto because it has enough healing magic to help him recover.
* Should one engage in LevelGrinding enough to beat the first World Eater without Gig's help, it breaks reality and Asagi appears. The battle with her nukes Prodesto, and only a NewGamePlus can restore things.
* Should one decide to turn absolute Evil and follow the Demon Path, if you call yourself "the Overlord" Laharl will telepathically complain at you and [[ButThouMust pick the first name choice, the Devourlord.]]

'''VideoGame/PrinnyCanIReallyBeTheHero'''
* A side-scroller following an apparently Alternate Ending to ''Disgaea 1'' where Etna is the ruler of the Netherworld and Laharl is a Prinny. The hero(s) is/are a group of 1000 Prinnies who each die in 3 hits; but whenever one dies; the next takes up the ScarfOfAssKicking. Said Prinnies are tasked with finding the Ultra Dessert.
* Many of the minor monsters, especially the food oriented ones, come from ''MakaiKingdom''. Others are monsters from various ''Franchise/{{Disgaea}}'' games released up to that point.
* Aramis is the Tutorial Manager, as well as fights on Etna's side when she's the BonusBoss.
* Baal is a BonusBoss in Prinny form.
* Asagi is a BonusBoss, she eventually dies and Reincarnates as a Prinny. (She becomes human again in Prinny 2)
** ''Prinny: Can I Really Be The Hero'' {{DLC}} content.''
** Flonne's tower.
** Phantom Island from ''PhantomBrave''
** Lil Asagi Comes Home.
* The sequel '''Prinny 2: Dawn Of Operation Panties, Dood''' is more of the same. Just switch "Ultra Dessert" with "Etna's panties" and you've pretty much got the plot. Asagi returns in [[AnotherSideAnotherStory her own story]], [[VideoGame/LaPucelle Priere]] and Tyrant Baal appear as {{Bonus Boss}}es, and there is a {{DLC}} battle with [[VideoGame/MakaiKingdom Pram]].

'''[[NoExportForYou Hayarigami]]'''
A SurvivalHorror game about a policeman named Kogure who is terrified of the supernatural; but uses logic and reasoning to try and stand in the face of the paranormal.

'''VideoGame/Disgaea3AbsenceOfJustice'''

* School of Evil Honor Student Mao tries to surpass his father, the Dean of the School of Evil and Demon Overlord for their dimension. His Rival is the goody-two shoes Demon Delinquent Raspberyl. Humans Almaz the wannabe hero and the Psychotic Princess Sapphire attempt to kill the demons before they do anything dastardly. Naturally, HilarityEnsues.
* Home Ec Teacher Mr. Champloo is Combat Chef class from ''Makai Kingdom''.
* Dark Hero Axel from ''VideoGame/{{Disgaea 2|CursedMemories}}'' can be found as a BonusBoss and recruited as an OptionalPartyMember, he is also in the Item World. He provides commentary in Mao's bad ending.
* Marona from ''PhantomBrave'' is an Optional Party Member; she says that Baal stole her "childlike sense of innocence'' psychically.
* Naturally Laharl, Etna, and Flonne are trying to pull a HostileShowTakeover. They are both {{Bonus Boss}}es and {{Optional Party Member}}s.
* Baal is once again a BonusBoss.
* And the Prism Rangers are students at the School of Evil.
* Yoshitsuna is the name of the strongest pirate ship. It's also the name of the sword, although it's only the second-highest ranked sword (the highest ranked sword is the Baal Sword).
** ''Disgaea 3 {{DLC}} {{Optional Party Member}}s'': After the plot, the School of Evil is looking for teachers. Not everyone qualifies, the rest become students.
** [[VideoGame/Disgaea2CursedMemories Adell, Rozalin, Hanako and Taro (reverted to their demon selves), and Tink]]
*** Amusingly, Hanako becomes a teacher for demon children. Everyone else just become students.
** [[VideoGame/DisgaeaHourOfDarkness CAPTAIN GORDON, DEFENDER OF EARTH, Kurtis (both Cyborg and Prinny version), Jennifer, Thursday, Vyers/Midboss and]] [[UnexpectedCharacter Aramis]]
*** Jennifer becomes a science teacher, Vyers becomes a teacher because he knew Mao's father, Aramis becomes a guest professor because he and Mao are fellow demon nerds.
** [[MakaiKingdom Pram and Zetta]]
*** Pram becomes a Teacher; having manipulated Mao into thinking he manipulated her.
** [[VideoGame/PrinnyCanIReallyBeTheHero The Hero Prinny]]
** [[SoulNomadAndTheWorldEaters Gig and Female Revya]]
** [[RhapsodyAMusicalAdventure Marjoly]]
*** She becomes a teacher due to her knowledge.
** [[LaPucelle Overlord Priere]]
*** Wasn't interested in the teaching position in the first place, Mao enrolls her as she has potential to be a great Honor Student.
** Kogure
*** Becomes a teacher, Mao hires him [[ItAmusedMe for the lulz]].
** Plenair
*** Doesn't become a teacher, but she scares the crap out of Mao so he promises a high position.
** Although not playable Baal appears in his standard form as a BonusBoss. He's trying to get a job.
** There is a downloadable [[ADayInTheLimelight story]] [[AnotherSideAnotherStory mode]] for Raspberyl where she goes and becomes a teacher. We learn that Flonne is studying to become an Archangel. Raspberyl mode also unlocks a playable version of [[spoiler: [[BigBad Super Hero Aurum]]]], in his final form.
* ''[[UpdatedRerelease Disgaea 3: Absence of Detention]]'' adds the following:
** Four [[AnotherSideAnotherStory additional scenarios]], including one that stars two all new characters from another Academy: Rutile and Stella Grossular.
** [[VideoGame/Disgaea4APromiseUnforgotten Fuka and Desco.]]
*** Desco is hired as a teacher right away, but insists her and Fuka are a two-for-one deal. They split a salary.

'''VideoGame/ZettaiHeroProject'''
* The evil Darkdeath [[DepartmentOfRedundancyDepartment Evilman]] threatens to destroy the world! The heroic Unlosing Ranger attempts to stop him...only to get run over by a car. [[LegacyCharacter Fortunately he finds a replacement]]. Unfortunately his replacement sucks and has to undergo training from the World Hero Society...and lots of it.
* The usual suspects, Laharl, Etna, Flonne and Asagi, all appear as [[TheCameo cameos]] and {{BonusBoss}}es. However, they merely become alternate costumes for the Unlosing Ranger when they're beaten. In addition, several other {{anime}} characters make similar appearances in the game; please see the article itself for more info.
* The most powerful BonusBoss is [[UnexpectedCharacter surprisingly]] Valvoga from MakaiKingdom (in his original monster form, no less). The World Hero Society was apparently created just to defeat him. He changed his class title from Dark Lord to Demon God, and his description states that he has ''[[TookALevelInBadass taken over the position of strongest boss from Baal]]''. At least, in that universe.

'''VideoGame/ClaDun: This is an RPG'''
* Asagi appears here as an OptionalPartyMember, eager to use the mechanic found in this game that [[HostileShowTakeover can make anyone a main character.]] At some point however, she is accosted by several duplicates of herself, prompting the other characters to try and find out [[SpotTheImposter which Asagi is the real one]]. Eventually they combine into a giant monster, which is eventually beaten. Oddly, once Asagi fully becomes the main character she starts...glitching.

'''[[VideoGame/{{Disgaea 4| A Promise Unforgotten}} Disgaea 4: A Promise Unforgotten]]'''
* Valvatorez, a vampire once known as a Tyrant, is now a Prinny Instructor in the Netherworld's prison Hades. When events prevent him from keeping a promise, he begins a rebellion against the Netherworld's corrupternment, along with his devoted servant Fenrich. HilarityEnsues with "Unprinny" Fuka Kazamatsuri, the Netherworld President's son Emizel, FinalBoss wannabe Desco, and Vulcanus the Angel of Avarice [[spoiler: aka Artina.]]
* Axel is the warden of Hades [[spoiler: later President of the Netherworld.]] He appears as a RecurringBoss and becomes an OptionalPartyMember.
* Flonne, now an Archangel, plays a role in the plot as [[spoiler: Artina's superior; her goal is to build a HumongousMecha.]] She becomes a BonusBoss and OptionalPartyMember.
* Yoshitsuna is still the second-highest ranked sword.
* Remaining {{Bonus Boss}}es and {{Optional Party Member}}s include [[VideoGame/Disgaea3AbsenceOfJustice Raspberyl]], [[YouShouldKnowThisAlready Etna, Laharl]], Asagi ([[ButtMonkey without an HD sprite]]), Prinny Kurtis, and '''humanoid''' [[MakaiKingdom Zetta]]. Pringer X is the final BonusBoss.
** The post-game story is about a strange phenomenon that causes other characters to gain the title of President and forces everyone else to obey them. Axel gets fans, Flonne spreads her message of love, Raspberyl makes demons do volunteer work, Etna makes everyone admire her nice body, and Laharl didn't affect anyone but still had the title of President. It turned out the whole thing was caused by Asagi, who wished to be the main character.
** Prinny Kurtis is challenged by Valvatorez and is forced into the party because he isn't acting like a proper Prinny.
** Zetta is looking for a good fight, and finds one in Valvatorez.
** Valvatorez challenges Pringer X because he also isn't acting like a proper Prinny.
* The story for most of the {{DLC}} characters is that they are interviewees for Valvatorez's party - political party that is. They are:
** Fallen Angel Flonne (no story).
** Asagi NT, [[ThrowTheDogABone Asagi with an HD sprite.]] Her appearance suggests she shares memories with the other Asagi. Despite appearing separately in cut scenes, a bill must be passed to turn normal Asagi into Asagi NT.
** [[VideoGame/Disgaea2CursedMemories Adell and Rozalin]]
*** Adell is out of a job from being too effective a demon-hunter and is trying to get money for his family and Rozalin. He's hired as a tax collector in order to finance support of demon families.
*** Rozalin is trying to buy a bigger house for Adell (though she insists it's for his family, who she lives with). She's hired as an educator of social etiquette.
*** The main cast is convinced the two are married.
** [[VideoGame/Disgaea3AbsenceOfJustice Mao]]
*** He's trying to join the party so he can fix up (experiment on) other demons. He's particularly interested in [[ArtificialHuman Artificial Demon]] Desco, but is quickly [[MegatonPunch sent flying]] by the other girls. Despite this, he joins as a Netherscience Researcher.
*** It turns out his Getter Mao ship is powered by Super Hero Aurum.
** [[LaPucelle Overlord Priere]]
*** Isn't interested in a position. Fights the party, but joins when she learns Valvatorez used to be a Tyrant.
** [[VideoGame/Disgaea2CursedMemories Pink]]
*** Actually appears in the main game in a [[{{Cameo}} cameo appearence]] as a Slumber Cat.
*** However when she appears as DLC, she is now a Death Saber. She explains she was captured by the corrupternment and forced to reincarnate as a Slumber Cat. Axel turned her back into her original form after the events of the game.
*** She wasn't initially interested in a position because she wanted to see Axel and return home. When she learns Axel is staying she tries to join the party, thinking it's an Axel fan club. She joins as Axel's manager.
** Prism Red
*** Applied to recruit more Prism Rangers. Really he just wanted friends. The main characters (except Fenrich) decide to become his friends.
** Pleinair
*** Appears in the main game's overworld as the Cam-pain Manager.
*** As DLC, she applies to join the party. Fenrich states her credentials, which are {{Continuity Nod}}s to her previous appearances. She joins as an Honorary Member (Mascot Girl), in part because Fenrich was worried about her [[EnsembleDarkhorse large fanbase]] ([[AmericansHateTingle in Japan]]). Unfortunately, he gets mistaken for a fan and is accepted into the Miss Pleinair Fan Club.
** [[VideoGame/Disgaea2CursedMemories Main Hero B]]
*** Axel prevents him from giving out his real name, though he doesn't mind living his life as an alias. Applies to become a Prinny Instructor because he wants to train under Valvatorez, which makes Fenrich jealous. It's revealed he's really a thrill-seeking [[TooKinkyToTorture masochist]] and is allowed to join as a punching bag.
** [[SoulNomad Gig]]
*** Called by Fenrich, but is more interested in fighting than applying. Desco quickly develops an admiration for him and makes him her teacher.
*** Some centuries ago, a robotic version of World Eater Feinne was built as Gig's ship. Gig attempts to destroy the Netherworld with it, but it's quickly reprogrammed by Fuka's father to follow only Fuka. He then pacifies Gig with [[TrademarkFavoriteFood hotpods]].
** [[VideoGame/Disgaea3AbsenceOfJustice Kyoko and Asuka]]
*** Applied because they want to be with Raspberyl. Eventually allowed to stay as students on a field trip.
** [[MakaiKingdom Petta]]
*** Applies because she wants to study politics and economics in order to become a Senator and help her father govern the Netherworld.
*** If Zetta is in the party, he allows her to stay for training, but under difficult conditions...such as mandatory snack time and two hours of naps.
** [[{{Neptunia}} Nisa]]
*** Mistakenly attacks Valvatorez's party, thinking he's holding Fuka and Artina hostage. It's revealed Fenrich had offered her a position as a Heroine of Justice to bring peace to the Netherworld.
** [[MakaiKingdom Pram]]
*** During her interview, she makes bad predictions for Fuka, Desco, and Artina. Valvatorez convinces them to believe her predictions by invoking ProphecyTwist, which fulfills another of Pram's predictions. Pram joins as an exclusive Oracle, while musing that the cast will become her new toys...
** [[PhantomBrave Ash and Marona]]
*** Marona applies to become stronger and protect more people. Immediately convinces Valvatorez when she announces she can eat anything, including sardines (his TrademarkFavoriteFood). She joins as a Sardine Coordinator, to teach all demons the value of sardines.
*** Ash appears by confining himself to a sardine, which disappoints Valvatorez (who thought a sardine was applying). He applied because he wants to get stronger. Valvatorez decides to train Ash in order for him to obtain the real power of sardines.
*** It becomes apparent Ash and Marona were becoming stronger for the sake of each other. [[CrowningMomentOfHeartwarming This will chronologically be the first time they are together since Makai Kingdom separated them.]]
** [[ZettaiHeroProject Pirohiko]]
*** Applies to spread the influence of the World Hero Society. Ultimately joins without permission...not that Valvatorez minds.
** [[VideoGame/DisgaeaHourOfDarkness King]] [[UnexpectedCharacter Krichevskoy]]
*** Having abandoned [[spoiler: the Mid-Boss persona]], he starts a tournament to determine the new Overlord. After being beaten, he admits to Valvatorez that he held the tournament to find a good leader for the Netherworld. Valvatorez turns down the position and insists that Krichevskoy should join their party if he cares about the Netherworld so much. Afterward, Valvatorez asks about the bonus prize of a thousand-year supply of sardines. It turns out that was a trick by Artina, who wanted the tournament's prize money.
** Although not unique characters, the Medic and Necromancer get unique cutscenes.
*** The Medic applied to level up her skills, having previously worked as a specialist with combat experience. She joins because the others don't want to see her cry.
*** The Necromancer applies and joins out of her own amusement.
** A BonusBoss battle against [[DemotedToExtra Baal]]
*** Fenrich invites him to show off Valvatorez's powers. After being beaten, Valvatorez hires Baal as a Battle Instructor - and strangely, Baal seems to approve of it.
** Two downloadable [[AnotherSideAnotherStory story modes]]. One is about Valvatorez's days as a Tyrant, and includes Tyrant Valvatorez as an unlockable character (separate from regular Valvatorez, like Fallen Angel Flonne). The other is about Fuka and Desco and unlocks [[spoiler: the boss characters Hugo, Des X, and Nemo]].
* ''[[UpdatedRerelease Disgaea 4: A Promise Revisited]]'' adds the following:
** [[VideoGame/Disgaea3AbsenceOfJustice Rutile an]][[UpdatedRerelease d Stella]] as an OldSaveBonus.
** A new [[AnotherSideAnotherStory story mode]] that involves TimeTravel into the past. Introduces Sister Artina and Nagi Clockwork.

'''[[VideoGame/DisgaeaDimension2 Disgaea D2: A Brighter Darkness]]'''
* A direct sequel to ''VideoGame/DisgaeaHourOfDarkness'', where Laharl, Etna, and Flonne get into more shenanigans. New characters include the Krichevskoy Group, Barbara, Xenolith, and Sicily, an angel who claims to be Laharl's sister. WordOfGod says it's set before ''VideoGame/Disgaea2CursedMemories''
* Yoshitsuna is again the second-highest ranked sword.
* {{Optional Party Member}}s include:
** Asagi, who isn't trying to pull a HostileShowTakeover but is trying to be an IdolSinger instead.
** Porkmeister, the AscendedExtra son of Hoggmeiser from the original ''[[VideoGame/DisgaeaHourOfDarkness Disgaea]]''. He wants to be Laharl's apprentince...since he has ambitions of becoming an Overlord himself.
** [[VideoGame/Disgaea2CursedMemories Axel]], who is also trying to become an IdolSinger.
** [[VideoGame/Disgaea4APromiseUnforgotten Emizel, Artina, Valvatorez, and Fenrich]].
*** Emizel was transported to the past in a quantum distortion, and is forced into Laharl's party while being treated like a Prinny.
*** Artina traveled back in time to get money owed from Hoggmeiser that he couldn't pay in the future. She attempts to kidnap Porkmeister to do this and ironically gets a scolding from Flonne.
*** Val and Fenrich are from before the events of their game. Laharl visits them after hearing rumors (spread by Fenrich) about Val's power. Laharl decides to take Valvatorez as a Prinnysitter, and Fenrich joins as a Valvatorezsitter.
** [[VideoGame/MakaiKingdom Petta]], who is looking for her father.
** [[{{Zettai Hero Kaizou Keikaku}} Darkdeath Evilman]], Pringer X and Baal appear as {{Bonus Boss}}es, though Baal was added in a patch.
*** Darkdeath Evilman was summoned by the Krichevskoy Group to test Laharl.
*** Pringer X was the source of an incident involving oddly silent Prinnies. According to Etna, Prinnies dedicated to fighting lose themselves and combine to form Pringer X.
*** Baal comes back to challenge Laharl once again.
* The {{DLC}} plot is that dimensional distortions are bringing in characters from across time and space...and Laharl thinks they're gunning for his position. Characters include:
** [[VideoGame/Disgaea4APromiseUnforgotten Fuka and Desco]], who are summoned by a bill in the Dark Assembly. Fuka still thinks it's a dream, but decides to try and take over the Netherworld with Desco.
** [[VideoGame/Disgaea2CursedMemories Adell and Rozalin]], who both arrive from the future.
*** Adell looks for a rare kind of candy for his siblings, much to the displeasure of Laharl. Afterward he joins the party when Sicily offers to make this candy for him.
*** Rozalin recognizes Laharl and company, but Laharl think it's a trick and attacks. Afterward, Rozalin introduces herself as the Overlord's daughter...neglecting to mention said Overlord was Zenon. The characters start wondering if Rozalin is Krichevskoy's daughter...and then Flonne worries that she's actually ''Laharl'''s daughter and proceeds to drag her back to the Overlord's castle.
** [[VideoGame/TheGuidedFateParadox Liliel]], who Laharl mistakes for a demon trying to become the Overlord. After that misunderstanding, they bring her back to the castle.
** [[VideoGame/Disgaea3AbsenceOfJustice Raspberyl, Mao, and Salvatore]].
*** Raspberyl is looking for donations. Laharl eventually is made to donate...but he insists that Raspberyl WorkOffTheDebt.
*** Mao wants to use Laharl's group for experiments. He's defeated and Laharl makes him his vassal.
*** Salvatore gives impossible orders to a Prinny on pain of death, which causes Sicily to intervene. At the last moment, Sicily is saved by Barbara, who then fulfills one of Salvatore's impossible orders. Salvatore then insists on ordering Barbara around more, prompting her to join Laharl's party.
** [[VideoGame/MakaiKingdom Zetta, Pram, and Alexander]].
*** Zetta arrives frantically searching for Petta. Afterward, he's reunited with Petta, but Laharl threatens to tarnish his image and blackmails him into his party.
*** Pram challenges Laharl to a fight. Afterward, she says that Laharl will eventually become the Overlord of all Netherworlds prompting Laharl to make her his vassal. Of course, the story is fake, and what she really wants to do is mess with Laharl for awhile.
*** Before they meet Alexander, Sicily talks about a story she heard where a Lightning God steals exposed belly buttons. The characters then mistake Alex for said Lightning God. Afterward Alex insists on following Laharl around to find the source of his power...but he also gets the reputation of being a belly button bandit.
** [[VideoGame/PhantomBrave Ash and Marona]]
*** The party went to Agul Eviland looking for the demon after the throne. Etna spooks Sicily with some ghost stories about the place...causing the party to mistake a lost Ash for an evil ghost. After defeating Ash, they apologize for the mistake and Flonne and Sicily lead him out of the area. Laharl runs after them when he wonders if Ash is actually the demon he was looking for.
*** Marona was hired to assassinate Etna, but she wanted to meet Etna first to see what she was like. Upon hearing the unflattering description she was given by Marona's client, Etna attacks Marona to learn the client's identity. After Marona is defeated she reveals enough details to indicate that a Prinny hired her. Laharl forces Marona to replace the Prinny as Etna's vassal, causing Etna to complain.
** [[VideoGame/TheWitchAndTheHundredKnight Metallia]], who arrives after creating a smelly swamp in the Netherworld. When the party insults the swamp she fights them. After she is defeated, Etna and Larharl opt to burn the swamp, but Meteallia claims that without it she'll vanish from the Netherworld. Flonne insists that Mettalia isn't really a bad person and makes her join the party, before she and Sicily go to get rid of the stench with some bathroom air fresheners...much to Mettalia's displeasure
** [[VideoGame/LaPucelle Eclair, Prier, and Overlord Prier]]
*** When Eclair escapes from her castle, she unknowingly ends up in the Netherworld and mistakes Laharl's group for soldiers trying to bring her back home. Laharl then mistakes Eclair for someone trying to claim his throne. After the battle, Eclair is shocked when she learns the truth. Etna then offers to help Eclair, surprising the others. What they don't know is that Etna plans on ransoming Eclair as a hostage.
*** The party encounters Prier attacking demons. When Laharl and company confront her, she insists that she's saving their souls. She's reluctant to fight the group because she thinks they're children. After the battle, Prier explains that she's trying to become the Maiden of Light, which is kind of like an angel. The others explain that fighting demons is the wrong way to do it, causing Prier to blame a person from her world (Father Salade) for tricking her. She then gets hungry, prompting Sicily to offer Prier a meal.
*** Overlord Prier encounters Laharl's group, and demands to know where she is and how to get home. Although Flonne and Sicily are willing to help, Laharl thinks she's an enemy, prompting a fight. Afterwards, Prier claims she became a demon to save someone from her world (Croix), and asks Laharl to take her as an apprentice so she can become stronger.
** [[{{Neptunia}} Nisa]], who competes with Etna in some kind of contest. Etna believes it's a cute girl contest, while Nisa believes it's a hero of justice contest. It turns to be a [[{{Pettanko}} flat chest]] contest, [[ACupAngst causing both Etna and Nisa to team up and attack the announcer]].
** [[VideoGame/SoulNomad Gig]], who arrives at the Netherworld looking for slaves to amuse him. Even after being beaten, it's evident that isn't using his full power. He then tries to destroy the other characters. Laharl tries to get him to stop by offering him strong demons to fight, but Sicily convinces Gig to join the party by offering food.
** [[VideoGame/BattlePrincessOfArcadia Plume]], who takes appears in the castle of Grosso from the Krichevskoy Group. (In fact, she appears in his bedroom.) Thinking it's her own castle, she takes it over, prompting Grosso ask Laharl for help. After the battle, she asks if she can stay at Grosso's castle until she gets home. Grosso emphatically denies her request, but with some prodding from Flonne and Sicily, she takes Plume to a better castle: Laharl's.

'''VideoGame/TheGuidedFateParadox'''
* An unlucky high school student named Renya Kagurazaka is urged by a cosplay maid at the local mall to try his luck at the lottery machine she's promoting. For the first time in his life, he wins and receives the grand prize -- he gets to be God. Said maid, Liliel Saotome, is actually an angel and brings him to Celestia to meet her senior angels and grant wishes to all who believe in God. Said believers include humans, angels, fairy tale characters, zombies, and mermaids.
* Cameo characters include [[VideoGame/ZettaiHeroProject Pirohiko]], [[VideoGame/DisgaeaHourOfDarkness Laharl]], [[VideoGame/Disgaea2CursedMemories Axel]], [[VideoGame/Disgaea3AbsenceOfJustice Raspberyl]], [[VideoGame/Disgaea4APromiseUnforgotten Valvatorez]], [[{{Neptunia}} Nisa]], and Asagi.

'''VideoGame/TheWitchAndTheHundredKnight'''
* In the land of Medea, Metallia, the Swamp Witch, wants to defeat the Forest Witch and spread her swamp. To do this, she summons the Hundred Knight, a legendary creature that possesses untold power. Turns out to be a tiny little creature, but slowly proves to be powerful in his own right.
* This is Nippon Ichi's first VideoGame3DLeap.
* There are no cameo characters at all compared to previous games.

!Anime Trivia

!Misc Trivia
* [[TalkingToHimself Talking To Herself]]: Almost inevitable with KaoriMizuhashi always providing the voice of a main character and Laharl in all of his cameos.

----