Nippon Ichi/Trivia

Events connecting the games. DLC and Video Game Remake often have references to games made later chronologically, leading to Continuity Drift.

Marl Kingdom

Rhapsody: A Musical Adventure
 * Commoner Cornet rescues Prince Ferdinand from Vain Sorceress 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.

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.

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

La Pucelle
 * 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 Sky Pirate. He meets and decides to wed Princess Eclair; who has an Enemy Without ("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 Bonus Boss; 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 remake La Pucelle: Ragnarok has the following:
 * Laharl, Etna, and Flonne (Fallen Angel version) as BonusBosses and OptionalPartyMembers.
 * An additional storyline involving Demon Lord Prier.
 * DLC OptionalPartyMembers include
 * Erie, the shopkeeper.
 * Hero Prinny
 * Cornet (presumably time travel is involved again).
 * Rozalin

Disgaea Hour of Darkness
 * 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 Rival Turned Evil, Kurtis; challenges them but after a Heel Face Turn 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 Fallen Angel (and still Love Freak), and Laharl's father; disguised as a Camp Gay figure named 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 Bonus Boss and Optional Party Member and is described as "the most powerful witch in the Galaxy."
 * Prier is also an Bonus Boss and Optional Party Member.
 * Baal is now a Supreme Overlord; and threatens multiple Netherworlds at once as a legendary Bonus Boss. 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 Power Rangers; harass the party.
 * The Etoile is the strongest version 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 Video Game Remake Only
 * A fight with Zetta still in book form from Makai Kingdom, Pram is manipulating Zetta into such fights.
 * A fight with Adell and Rozalin from Disgaea2. It is likely that they are only Demonhall Mirror Copies.
 * DS Video Game Remake Only: Plenair and Zetta are Optional Party Members.

Phantom Brave
 * 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 Littlest Cancer Patient 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, mysteriously Sulphur returns at full power as a Bonus Boss due to Lujei.
 * Laharl, Etna, and Flonne from all appear as Bonus Boss. After Laharl continually picks fights with Marona and Level Grinding 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 Disgaea: Afternoon of Darkness also tests Marona; and also leaves her a Phantom copy of himself.
 * Nyao; from Rhapsody: A Musical Adventure is a Bonus Boss and Optional Party Member. She actually uses her powers to turn herself into a Phantom; so is not a copy.
 * Baal has taken the form of a Funguy; but is defeated as a Bonus Boss. Is also an Optional Party Member; though his joining Marona's party is sinister.
 * Pringer X is a Bonus Boss; a character from one of Etna's chapter goofball stories.
 * The Wii Video Game Remake subtitled We Meet Again adds the following
 * Addtional BonusBosses Pringer XX and Pringer XXX
 * The "Another Marona" story, an additional storyline taking place in an Alternate Universe. In addition to the version of Marona present in the story, it also introduces.
 * The PSP port of the Wii version includes the following BonusBosses and OptionalPartyMembers
 * Hero Prinny
 * Zetta, in book form
 * The Unlosing Ranger
 * A playable Castille, having time traveled from her Makai Kingdom appearance.
 * Asagi.

Makai Kingdom
 * 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...
 * Zetta is the Maijin class from Disgaea.
 * Dark Lord Valvolga is mentioned as being used as a Final or Ultimate Boss in other games.
 * Castille from Phantom Brave, 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.
 * There is a possibility that the former is not true. In the battle against Castille, she begins the stage riding in a vehicle. Because of this game's Point-based system for beating stages, all you have to do to win the fight is destroy the vehicle (i.e.: knock the wheels out from under her). Either way, it's possible that Zetta fixes her legs after making her a vassal, as she can walk fine when she joins you.
 * 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 Bosses and Optional Party Members. They are hunting Baal; if they find Baal in Zetta's old body; they actually destroy the body. Whether this is Canon is not known.
 * Baal is revealed to be as old as the universe, and whenever one body dies; he just 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 ''Disgaea 3 Absence of Justice's Mr. Champloo.
 * The Yoshitsuna is an airplane driven by the Prinny form of Baal.
 * The PSP port will have an alternate storyline starring a new girl named Peta  One of her skills as a DLC character in Disgaea 4: A Promise Unforgotten suggests

Disgaea 2: Cursed Memories


 * Demon Hunter Adell is  the last human on Veldime; Demon Overlord Zenon   has cursed the humans into becoming demons. Through a summoning ritual gone wrong , Adell summons the haughty and busty daughter of Zenon  , Rozalin and she leads him to Zenon.
 * 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 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 Bosses and Optional Party Members.
 * 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 Alex and Pram.
 * The Prism Rangers return.
 * Zetta is a Bonus Boss; still in Book Form; still being messed with by Pram.
 * Demon Overlord Priere is an Bonus Boss, 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 Bonus Boss; but is under a curse where she cannot speak. She didn't speak in 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; only gained from an Item God from the second most powerful sword; this time only available in the Land of Carnage. The Etoile gun also makes a reappearance.
 * Asagi is a Bonus Boss; 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, AI Is a Crapshoot.
 * Several of the Demon Overlords from Makai Kingdom 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 Video Game Remake Dark Hero Days
 * Asagi is an Optional Party Member. She can become humanoid if her Dark Assembly bill passes. (She wasn't probably because she died in Prinny Can I Really Be the Hero
 * Aramis appears before the Council to shill Prinny: Can I Really Be A Hero.
 * The Ronin class and Entei Demon class are available if one has a Disgaea: Afternoon of Darkness saved game, the Angelic Host are available after defeating one in "Axel Mode".
 * CAPTAIN GORDON, DEFENDER OF EARTH from the first Disgaea is an Optional Party Member as well as Vyers/Midboss.
 * Mao, Raspberyl, and Mr. Champloo from Disgaea3 are Optional Party Members.
 * Saber Kittys from Phantom Brave are an unlockable class.
 * Demon Overlord Priere is an Optional Party Member and her infamous "Sea of Blood" bill is retconned out.
 * Zetta is an Optional Party Member.
 * PSP Video Game Remake Dark Hero Days DLC Optional Party Members
 * Dark Eclair from La Pucelle, Japan-only
 * Ash And Marona from Phantom Brave
 * Gig from Soul Nomad and The World Eaters, Japan-only
 * Pram from Makai Kingdom
 * Plenair
 * Princess Sapphire and Almaz from Disgaea 3 Absence of Justice
 * Miabelle from the upcoming game "Princess Antiphona", Japan-only
 * Demon Lord Hanako
 * And Pringer X, but as a Bonus Boss, not an Optional Party Member.

Grim Grimoire
 * A magic school has a new witch student going through a Groundhog Day Loop to stop a Devil King and a Dark Mage Lord from reviving. What's important to other Nippon Ichi games, though, is that the Ghost Witch Lujei Piche escapes from the magical authorities by fleeing into the Void Between The Worlds.

Soul Nomad and The World Eaters
 * 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 The Grim Reaper who once tried to conquer their world 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 Phantom Brave. After falling into the Void Between Worlds with Sulphur, they are both rescued by Lujei Piche from Grim Grimoire, who sends Sulphur back to Ivoire (that's why he's a Bonus Boss) and sends Walnut to Prodesto because only there is enough healing magic to help him recover.
 * Should one engage in Level Grinding enough to New Game+ and beat the first World Eater without Gig's help; this breaks reality and Asagi appears. The battle with her nukes Prodesto, and only another New Game+ 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 pick the first name choice, the Devourlord.

Prinny Can I Really Be the Hero 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 Scarf of Asskicking.
 * Many of the miner monsters, especially the food oriented ones, come from Makai Kingdom.
 * Aramis is the Tutorial Manager, as well as fights on Etna's side when she's the Bonus Boss.
 * Baal is a Bonus Boss in Prinny form.
 * Asagi is a Bonus Boss, she eventually dies and Reincarnates as a Prinny.
 * Prinny: Can I Really Be The Hero DLC content.''
 * Flonne's tower.
 * Phantom Island from Phantom Brave
 * Lil Asagi Comes Home.

Hayarigami A Survival Horror 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.

Disgaea 3 Absence of Justice
 * 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, Hilarity Ensues.
 * Home Ec Teacher Mr. Champloo is Combat Chef class from Makai Kingdom.
 * Dark Hero Axel from Disgaea 2 Cursed Memories can be found as a Bonus Boss and recruited as an Optional Party Member, he is also in the Item World. He provides commentary in Mao's bad ending.
 * Marona from Phantom Brave 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 Hostile Show Takeover. They are both Bonus Bosses and Optional Party Members.
 * Baal is once again a Bonus Boss.
 * 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 Members: After the plot, the School of Evil is looking for teachers. Not everyone qualifies, the rest become students.
 * 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.
 * CAPTAIN GORDON, DEFENDER OF EARTH, Kurtis (both Cyborg and Prinny version), Jennifer, Thursday, Vyers/Midboss and 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.
 * Pram and Zetta
 * Pram becomes a Teacher; having manipulated Mao into thinking he manipulated her.
 * The Hero Prinny
 * Gig and Female Revya
 * Marjoly
 * She becomes a teacher due to her knowledge.
 * 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 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 Bonus Boss. He's trying to get a job.
 * There is a downloadable story 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, in his final form.
 * Disgaea 3: Absence of Detention adds the following:
 * Four additional scenarios, including one that stars two all knew characters: Rutile and Stella Grossular.
 * Fuuka and Desco.

Zettai Hero Kaizou Keikaku
 * The evil Darkdeath Evilman threatens to destroy the world! The heroic Unlosing Ranger attempts to stop him...only to get run over by a car. 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 cameos and BonusBosses. 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 Bonus Boss is surprisingly Valvoga from Makai Kingdom (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 taken over the position of strongest boss from Baal. At least, in that universe.

Cla Dun: This is an RPG
 * Asagi appears here as an Optional Party Member, eager to use the mechanic found in this game that 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 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.

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. Hilarity Ensues with "Unprinny" Fuka Kazamatsuri, the Netherworld President's son Emizel, Final Boss wannabe Desco, and Vulcanus the Angel of Avarice
 * Axel is the warden of Hades  He appears as a Recurring Boss and becomes an Optional Party Member.
 * Flonne, now an Archangel, plays a role in the plot as  She becomes a Bonus Boss and Optional Party Member.
 * Yoshitsuna is still the second-highest ranked sword.
 * Remaining Bonus Bosses and Optional Party Members include Raspberyl, Etna, Laharl, Asagi (without an HD sprite), Prinny Kurtis, and humanoid Zetta. Pringer X is the final Bonus Boss.
 * The story for most of the DLC characters is that they are interviewees for Valvatorez's party - political party that is. They are currently:
 * Fallen Angel Flonne (no story).
 * Asagi NT, 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.
 * 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.
 * Mao
 * He's trying to join the party so he can fix up (experiment on) other demons. He's particularly interested in Artificial Demon Desco, but is quickly 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.
 * Overlord Priere
 * Isn't interested in a position. Fights the party, but joins when she learns Valvatorez used to be a Tyrant.
 * Pink
 * Actually appears in the main game in a 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.
 * DLC characters that are still Japan-only include Main Hero B, Kyoko, Asuka, Pleinair, Prism Red, Gig, Pram, Petta, Nisa, Tyrant Valvatorez, Marona, Ash,.
 * DLC characters that have been announced for Japan are King Krichevskoy and Pirohiko. There are also reports of a downloadable battle against