Disgaea 4: A Promise Unforgotten

Disgaea 4: A Promise Unforgotten (魔界戦記ディスガイア4, Makai Senki Disugaia Fō, literally: Netherworld Battle Chronicle Disgaea Four) is the fourth installment in the Disgaea series and the second Disgaea game to be on the Playstation 3. It stars a Vampire named Valvatorez who leads a coup d’état in the Netherworld in order to reform its corrupt leadership. As a result, the game's themes are deeply-rooted in politics. It has improved graphics from Disgaea 3: Absence of Justice and an "Online Mode". It was released on February 24th in Japan, September 6th in North America, and November 25th in the EU.

Characters
The new main characters are Valvatorez, a vampire and former tyrant, Fenrich, a werewolf who serves Valvatorez, Fuka, a human who wears a Prinny themed school uniform due to no Prinny outfits being available to her because of budget cuts, Vulcanus, an angel who's very fond of money (even being called the Angel of Avarice), Emizel, a spoiled brat kid who happens to be the son of the current Netherworld president, Hugo, and DESCO, a rejected final boss (her name is an acronym for "Death/Extermination Submersible Combat Organism").

The game also features returning characters, including Axel, who has become the warden of Hades whom Valvatorez and Fenrich serve under, as well as Flonne, Laharl, and Etna. Flonne is no longer as a fallen angel but returns as Celestia's new archangel. A code that comes with first print copies in Japan allows players to download her in her Fallen Angel Form for free. A code was also given to people who pre-ordered from Gamestop as well as pre-ordered from NISA's official site (given via e-mail). Pleinair also returns in the game, serving the same purpose as she did in Disgaea 3. Axel, Raspberyl, Archangel Flonne, Etna, Laharl, Asagi, Prinny Kurtis, and Zetta (humanoid form) are able to be fought and recruited in the post-game.

Classes features most of the classes from the previous games. Human classes include the Male and Female Warriors, Mage and Skull, Magic Knight, Gunner, Masked Hero, Beast Master, Healer, Heavy Knight, Female Samurai, Archer, Ninja, and Shaman. Monster classes include the Prinny, Dragon, Succubus, Nekomata, Reaper, Mystic Beast, Slime, Eryngi, Dragon Zombie, Orc, Wood Golem, Rifle Demon, Ghost, Zombie, Alraune and Cockatrice.

Other classes include the Gargoyle, who was absent in the series since the original Disgaea. Also included is the Professor class from Makai Kingdom, Battle Suit, Onmyo Monk, Android, and the Bouncer.

The sprites have been changed into HD, although players can change them into their older format for nostalgia purposes.

The special Limited Edition version of the game contains an artbook, a CD and a Nendoroid figure of the character Fuka. The same limited edition is available in North America (with the Nendoroid Fuka figure replaced with a Fuka figure from the Disgaea 4 Trading Arts series) along with an upgraded version that has all previously mentioned items and 9 figures of the characters (Also from the Disgaea 4 Trading Arts series).

Story
The game begins in Hades, where Valvatorez, a former tyrant, is training the next batch of Prinnies in Hades. Fenrich, his loyal servant tries to give him a sardine with human blood but Valvatorez refuses to drink any human blood due to a promise made in the past. They are called down to give the Prinnies their last lesson before they graduate the course. After the final lesson, Valvatorez promised to give each Prinny a sardine and just before they could eat it, a vortex appears and takes them away.

Noticing that this is an action of the Corrupternment, Valvatorez decides to rescue the Prinnies and give them the sardines as promised. They go on to meet Axel, who is now a warden at Hades tells him that he cannot hand over the Prinnies to them. Having no other choice, Valvatorez and Fenrich fight Axel and afterwards, the Corrupternment sends a group of assassins called the Abanddon to quell the uprising in Hades. Axel escapes and tries to tell the Abanddon that Valvatorez is behind the uprising but Fenrich convinces the Abanddon that Axel is behind it. He is forced to fight with Valvatorez and is told by him that he should not side with the Corrupternment. The leader of Abaddon reveals himself as Emizel, the President's son to them. Axel tries to suck up to Emizel but he doesn't believe him and strikes Axel.

Thinking he was killed, Valvatorez fights Emizel and wins, causing him to be embarrassed and sets free the Prinnies. However, a girl named Fuka appears and states that she will annihilate the Prinnies and declares a war. Valvatorez is disgusted at the thought of it but Fenrich tells him that she is foolish and plans to stop her. They go to a heavily polluted area, filled with waste from the Human World. Noticing that the Corruptement is letting this happen, Valvatorez wonders how far it has fell.

It is revealed that Fuka was meant to become a Prinny but the Prinny Factory ran out of skins and gave her a Prinny Hat and Jacket. She thinks by eliminating the Prinnies, she will improve her working conditions when Valvatorez says that she must follow the path of a Prinny. Fuka believes it is all a dream as she did not want to believe that she had died and became a Unprinny. She reveals her secret weapon which turns out to be Emizel but Fuka finds out from them that he is weak and is defeated again. Later on, Fuka decides to fight them herself and Fenrich notices that she has a power comparable to demons. They defeat her and Fuka wonders why she had lost in her dream and why her "nightmare" won't end.

Valvatorez asks why and Fuka states while she doesn't have to go to school, she has to live through the harsh working conditions of a Prinny when he tells her that's how Prinnies live. She runs away to the most polluted area filled with monsters afterwards. Fenrich tells Valvatorez not to rescue her but he states it is his duty as a Prinny Instructor. They catch up to her and Fuka learns why Valvatorez came to rescue her and joins the group before fighting a group of slimes. Out of nowhere, Axel appears to them alive, stating that he has released of all the prisoners in Hades and tells them that if they kill Valvatorez, they will be pardoned.

In Hades, Valvatorez goes to contain the prison break with Fuka following along. Some prisoners reveal that they were imprisoned for trying to do their job of scaring humans. They learn that Valvatorez was a former tyrant and run away with Valvatorez questioning if demons are doing their jobs to obtain fear energy. With the prisoners being unable to defeat Valvatorez, Axel decides to unleash the forbidden prisoner. It is also revealed that Emizel is working with Axel to stop Valvatorez's efforts. At the Forbidden Cell, the prisoner is revealed to be Desco, a final boss in-training. Fuka states that Desco is one who put her into her dream and Desco sees that it is Fuka, her big sister. Desco states that she must kill the hero when Valvatorez states he is not one. Axel orders Desco to kill when Desco blasts Axel, making it look like he died again.

Desco decides to target Emizel next when Valvatorez moves to protect Emizel from her attack. The Prinny Instructor states to Desco what a true final boss must be and fights her. Being defeated, Desco tears up and asks is she is going to be abandoned again. She reveals that she was created by humans and seeing how demons are letting humans run loose, Valvatorez officially declares to ursurp the current reigme. He promises Desco to help become a final boss and she joins the party.

The Hades Party is formed, with several demons taking note. Emizel wakes up as he fainted after being protected by Valvatorez. Fenrich tells him to come with them and hands Emizel a newspaper, stating that he had died. In the fourth episode, Emizel wonders how they could publish the newspaper and wonders if his own father believes he is dead. Reading the newspaper, Valvatorez takes note of a spelling error, with Prinny being spelt as "Primy". He declares to go to the Information Bureau to correct the mistake when Fenrich reminds him of their primary goal of taking over the Bureau. Emizel decides to tag along and tell the Bureau that he is alive.

Before they depart, Fuka tells Desco that she isn't her sister when Desco tells her that she was created by her dad. Valvatorez breaks up the fight and states they must get along for the Party's bonds to be stronger. At the Information Bureau, they manage to sneak in due to Emizel knowing the security system. Seeing the security guards, Emizel tells them that he is the President's son and is alive. They don't believe him despite him showing a royal emblem as they believe everything in the newapaper. Meanwhile, a suspicious Prinny sneaks in with Desco asking who it is before the Prinny states that it is a worker.

At the top of the Information Bureau, the Chief appears and wonders how Valvatorez's party managed to get in. Emizel move forwards and identifies himself as the President's son and asks them to withdraw the newspaper. The Chief answers back stating that it was an order of the Corruptement and his father knew about it. Being confused, Emizel wonders how his father knew when Fenrich tells him that he sent a humiliating video of Emizel running away as blackmail. Valvatorez states that Emizel must not rely on his identify anymore and instead become a mature person with Emizel having conflicted emotions about it. Later, when the Chief is defeated, Valvatorez asks her to correct the spelling mistake when Fenrich steps in and asks her their true goals. The suspicious prinny from before walks in and fines the Bureau for damages done to Celestia.

Noticing its abnormal speech for a Prinny, Valvatorez asks it to identify itself and it reveals itself as the Angel of Avarice. The angel tells them her name is Vulcanus and makes off with the Bureau's money with Valvatorez wondering if she was a girl he had met before by the name of Artina. In Episode 5, Emizel asks Valvatorez on why is he so gloomy. Fuka walks up to Emizel and pulls him to where Desco is. She tells him that he is thinking about the angel and that she must be someone he had met before since he called her Artina. Desco adds on to the conversation thinking it might be love where Emizel thinks it's a crazy idea. Fenrich dismisses such ideas and tells Valvatorez not worry about the angel. They decide to go to the mid-level demon area in order to gain the support of the low and mid-level demons for the upcoming Evilection.

Appearing as an amusement park, Fuka and Desco are excited to go on rides together when Valvatorez and Emizel tell them that it is training course. Wanting to know the past of him and Artina, Fuka asks him for his story in the past. Valvatorez decides to share with them and tell them his past days of when he was a Tyrant. 400 years ago, as a tyrant, Valvatorez scared many humans and took as much blood as he wanted. During a human vampire hunt, he met Artina who wasn't afraid of Valvatorez when they first met. As she learned that vampires needed blood for survival, she offered Valvatorez her own blood but he refused as wants to scare her first. This led to a promise where Valvatorez promised to protect Artina so that he could scare her but refused to drink any blood before taking her own.

Back in the present, his story is interrupted by a group of demons when Fuka and Desco are angered for not hearing the end of the story. After defeating them, they move on to the next area where they see Vulcanus surrounded by group of demons wanting to kill her. Fenrich didn't mind them killing her but Valvatorez intervenes and saves Vulcanus. At first, she isn't grateful to them but says thanks to them. She asks why demons aren't doing their job of scaring humans before managing to escape. Valvatorez decides to tell the rest of the story to them afterwards.

After three days Valvatorez made the promise, Artina was killed due to her aiding wounded enemies of her country. Being at the scene of her dying breath, Valvatorez blames himself for not protecting her and is the reason why he does not drink blood 400 years later. As they arrive at a merry go round, they meet up with Vulcanus and learn that she is already on her way, presumably with the area's money in hand. Although Valvatorez does not see her as a threat, Fenrich decides to tempt her into fighting them by telling her that they have a 10 million HL bounty on their heads. Interested in the money, Vulcanus decides to fight them and Magichanges with two Catsabers in order to do so.

After she is defeated, Fenrich decides to turn her into the Corrupterment to receive the bounty reward on her head. He lets her have a conversation with Valvatorez about his duty in scaring humans and learns of his name. Noticing something was wrong, Vulcanus shields Valvatorez with her body from a bullet fired by Axel who is revealed to be alive. Later on, Vulcanus awakes, shocking Fuka as she presumed that she was dead. She decides to tag along with the group as she claims they owe her 5 million HL for saving Valvatorez's life.

The party decides to move on to the upper level demon area where it is a snowy graveyard. They notice that its inhabitants sound and act like Axel including Fuka, Desco and Emizel. Eventually, they catch word of the A-Virus, a virus that transforms its victims into Axels. As they progress through the area, Fuka, Desco, and Emizel slowly starts changing into Axels, beginning with an impersonation, followed by bodily changes such as chest hair growing on Emizel. Valvatorez promises them that he will find the cure, claiming that it can be found by defeating the area boss. Eventually, the real Axel appears to them, saying that the Corrupterment developed the A-Virus in order to suppress the rebellious inhabitants of the Netherworld.

Axel also claims there is no cure for the virus and later, they fight Axel. When he is defeated, it turns out that it was of no use and Fuka, Desco, Emizel and Fenrich all transform into Axel. Valvatorez is diswayed by this, stating that he will find cure and will never break a promise again. Vulcanus decides to injure herself to gather up her blood from her arm. She goes to Fuka and tells her to drink her blood, after Fuka drinks it, she restored back to normal with the rest of the infected being cured as well. Vulcanus explains that angel blood can cure any impurity but had not told them about this as it is against Celestian Law for an angel to injure themselves. She decides to go sell her blood to the remaining infected demons and the rest of the party decide to make their move, which is taking over the Corrupterment and defeating the President.

At the start of Episode 7, the party plans their final move on the Corrupterment, going into the Blight House which is the office of the President. Emizel states that the Corrupterment has 600,000 demons in the area and Fenrich responds with a plan to secretly invade the Blight House and assassinate the President. Valvatorez says that it is a cowardly strategy and they must take on the Corrupterment with full force. They arrive at the entrance to the Corrupterment and Valvatorez states his party's goals of usurping the regime. Suddenly, the 600,000 demon army mobilises to their position and they are greeted with a first batch of Corrupterment decides. As they were outnumbered, a group of Prinnies appear to their aid and declare that Valvatorez has the support of all Low, Mid and High Level Demons to help fight the Corrupterment forces.

The Hades Party fights multiple well known groups of the Corruptermen such as the Three Brutes, the Four Devas, the Seven Yakshas and the Ten Overlords. Finally, they arrive at the President's Office where they are greeted by President Hugo. Hugo asks Valvatorez why is he leading the rebel forces and Valvatorez states that it is due the demons neglecting their responsibilities. Each party member is also asked on their goal and with all them having different goals, Hugo mocks them saying how could they defeat him if they are not completely united. Valvatorez declares that it is their camaraderie that unites them and they fight Hugo. After they win, Valvatorez expects Hugo to transform into his other forms but Hugo admits that was all the power he had left. Hugo also reveals that there is little Fear Energy left in the Netherworld, being the reason why so many demons have lost their powers. It is also revealed that humans have continuously lost their fears against demons and despite the demons trying everything they could, the humans eventually overwhelmed them with their scientific technology.

A group of humans also came to the Netherworld to retrieve demon bodies in exchange for Fear Energy but they have only let little leak in to the Netherworld. The defeated President Hugo confesses that a single human has been control of the Netherworld the entire time, shocking Valvatorez greatly.

The Human World leader, Judge Nemo is revealed to have been the mastermind behind the game's events. Nemo states his purpose as a judge to humanity, stating that every human's existance is a sin. He offers Valvatorez to join him to bring Hades to the worlds and destroy them. He refuses and decides to challenge Nemo with him accepting his challenge and telling them to come to the Human World. Before they depart, they must decide on a new President which Axel shows up and takes the position as Valvatorez says there are other things to worry about. The Human World is revealed to be a place filled with scientific technology and pollution. The Hades Party is greeted by a group of Bio-Suits which Fuka recognizes them created by her dad. Nemo appears to them and reveals that the humans have made demon clones due a deal he made with President for obtaining demon specimens.

As they progress through the human factory, Fuka sees her father, Genjuro, who recognizes Desco but not Fuka. Genjuro reveals that Fuka had really died and thought see had gone to Hell due to her plans of World Domination. Once again, Nemo appears and reveals that he had been funding Genjuro's research and decides to unveil the main event, the "True Final Weapon" who had sent both Fuka and Desco to Hades, Des X. She claims it is impossible for them to defeat her but the party decides to lend their support to Fuka and Desco. Afterwards, Des X refuses to give up and reveals she had killed Fuka for stealing her dad's attention from her. Des X transforms and Fuka being angered by this, powers up and unleashes her true power. Des X is defeated again and Fuka states that her father was selfish for being so absorbed into his research. Desco reveals that the demon clones and Des X and herself were all created for Fuka. She is still angry at her dad when Nemo appears and despite Des X being defeated, states he will blow up the moon next.

Nemo escapes, and the party decides to go to the moon through the Dimension Gate. Fenrich is angered that Nemo would target the moon due to the moon being a symbol of loyality to Valvatorez. On the moon's surface, they encounter aliens who are very formal and business like. They also find out that in order to stop the destruction of the moon, they must destroy ignition devices first. Nemo appears after they destroy the first ignition device and tells them that the Pan-Galactic Alliance(which consists of 20 billion planets) had ordered the extermination of the humans on Earth. Valvatorez is still confident in stopping the destruction of the moon as he promised earlier to protect the moon and the Earth. After they destroy the second ignition device, Nemo tells them that they must stop the alien base's reactor core if they want to stop the moon's destruction. After the reactor core's destruction, Nemo tells them that the moon will fall on to the Earth because of the reactor core's destruction.

The party is dismayed and struggles to find a way to prevent the moon from falling. Suddenly, Archangel Flonne appears on the moon, telling the party that she has the solution to their problems. She also accidentally reveals that Vulcanus is actually Artina all along. Artina is shocked as she learns that all of the money she was collecting was being used to build Great Flonzor X, a robot being used to hold the moon. Flonne tells the party that Great Flonzor X needs more awe energy to return the moon to its original place. Fenrich opts for a different solution by finding the remaining aliens and asking them for an alternate way to stop the moon from falling. After defeating the remaining aliens, the party decides the only way to stop the moon from falling is to create more awe energy for Great Flonzor X. As a result, not only the entire party prays to Great Flonzor X, but all of the Demons of the Netherworld and Humans pray due to the efforts of the newly elected President Axel and Genjuro. They managed to convince their people to lend their support to the party by praying to Great Flonzor X. The moon is returned back to its original place and as the party celebrates, Nemo appears once again. He tells them that he will not stop before being consumed by dark energy.

The party notices a malicious aura in the area and surrounding the Earth. Flonne figures out that Fear the Great has been activated. Back in Hades, she explains that Fear the Great is an emergency system created by God to destroy a planet if there is too much malice. The party declares that they will stop Fear the Great and save the Earth. Flonne opens up a gate to Fear the Great for the party. The party travels to Fear the Great where they encounter beings of Malice which uses Nemo's voice. They figure out that Nemo is being possessed by Fear the Great as it possesses the human with the most malice. Fenrich notices how the malice beings speak about Nemo's family and Artina being taken away from Nemo. He demands that Artina should tell them of her past with Nemo. She explains that Nemo was a wounded soldier who wandered into her treatment clinic during a war. Nemo was previously tortured by her country and managed to escape. As a result, his country thought he was a spy and took away his family. As Nemo was an enemy of Artina's country, she was killed after being suspected of being a spy. Nemo grew more and more hateful of the human race until he deemed that Demons and Angels were responsible too for letting the humans create chaos.

Back in the present, Fenrich figures out that if they get Nemo to believe that Artina is alive, he will stop his rampage. After two failed attempts, Valvatorez convinces Nemo that Artina is here with them. Nemo finally sees Artina, and he thinks that he is a fool for doing what he did in the past. He decides to disappear with Fear the Great to limbo, where he can never reincarnate. Artina thinks that Nemo should still pay for his sins and Valvatorez decides to turn him into a Prinny. They travel to the center of Fear the Great where Nemo asks them why are they still here. They convince him that he will be able to reincarnate as a Prinny and pay for his sins. However, the core of Fear the Great possesses him and the party fights him in the final battle. After Nemo is released from Fear the Great, Nemo thanks them for what they have done. Emizel reaps Nemo's soul afterward. The narrator states that the names of the 6 members of the party were written down in history for saving the world. The credits roll afterward.

Disgaea 3 to Disgaea 4 Connectivity
All players with a Disgaea 3 save file will unlock the "Hall Monitor" Evil Symbol. The symbol allows confiscation of items from Netherworld Assembly representatives. The symbol is also unlockable through normal gameplay by stealing any item from any enemy, so those who haven't played Disgaea 3 won't miss out.

Magichange System
The Magichange feature that was introduced in Disgaea 3 returns in Disgaea 4 as well, while also being expanded. Some added features include:


 * Monster + Monster (Fusion) = Mega monster
 * Monster + Human with magichange weapon = Human with two magichange weapons
 * Mega Monster + Human = Human with mega weapon
 * Mega Monster + Human with mega Weapon = Human with two Mega Weapons

Interestingly enough, this means one can access both skill sets and attack two times per turn with the same character. If a character is dual-wielding weapons, the second weapon will override one of the armor slots.

The player can also get an evil symbol that allows them to combine two giant monsters into a giga monster with increased stats and the same size.

Punishment System
There is a new Punishment system called Educational Coaching. By capturing an enemy unit (by throwing them into the base panel) the player can use the Discipline Room to punish and torture them. By torturing them, various options will be available, such as unlocking a treasure chest in one of the story maps, stealing their money, and recruiting them into becoming an ally. This can be done on both humanoid classes and monsters. The player can only capture classes they already have access to. This feature is commonly used to acquire parts for Pirate Ships.

Tower Attack System
As with Disgaea 3, Disgaea 4 incorporates different Tower Attacks. This installment also includes new abilities to use when in a tower (such as the ability to move the tower and the ability to use the tower to grab enemies and items).

Online Mode
There is an online mode in the game in which the player can create a custom pirate ship and send characters into the internet to barge into other player's games. There's also an automatic level arrangement system. For example, when a player goes online to fight a random person and their characters are around level 2,000 then they will fight someone at around that same level instead of someone at a level higher or lower. Also the player can obtain a Red Cellphone from a Cellphone seller in the item world which allows them to call a random person whose Defense Minister will help in battle, however the Defense Minister can be any level and is not controlled.

Map Creation
The player can create their own custom maps in the game. They can put the map they created online for other people to play and rate. They create maps by placing tiles, characters and Geo Blocks in a grid like area. Once completed they can name the map and give it a description. However, this feature is slightly altered in North America and Europe due to differences in regional regulations. Map parts are purchased with CP, gained from completing Pirate Duals, other Users' Maps which varies from landform parts, Geo Blocks and other decorations.

Base Creation
Similar in fashion to Zettai Hero Project: Unlosing Ranger VS. Darkdeath Evilman the player can customize the Hades hub area in this game. This is done through the Map Creation feature. Players are also given the ability to select which character is in charge of the various shops (example: making Fuka the Item Shop Keeper or making Flonne the Dimensional Gatekeeper).

Cameos
In Disgaea 4: A Promise Unforgotten, the cameos are not playable characters but are instead used as the conveyors of the Omega spells. The following cameos seen within the game include:


 * Omega Fire - Meito "Anime Tenchou" Anizawa, Animate's mascot.
 * Omega Wind - Holo from Spice & Wolf
 * Omega Ice - Astarotte Ygvar from Astarotte no Omocha!
 * Omega Star - Bikkuriman
 * Omega Heal - Index from A Certain Magical Index

DLC
Disgaea 4 much like its predeccesor contains a large amount of DLC.

NIS America's official website shows up upcoming DLCs and their release dates.

NIS America, Disgaea 4 DLC info

Current list of DLC:


 * Fallen Angel Flonne: Flonne in her Fallen Angel form. A PSN code was included in first print copies of Disgaea 4 which could be redeemed to get her. The code is available as a GameStop pre-order bonus in North America. It was also available through NISA's online store. She is available from the first time you enter the Cam-pain HQ, even in the normal game.
 * HD Asagi: An HD version of Asagi. Money spent on this DLC will go towards the Earthquake/Tsunami relief effort in Japan. The HD Asagi is free to download in North America.
 * Adell: The main male protagonist from Disgaea 2: Cursed Memories.
 * Rozalin: The main female protagonist from Disgaea 2: Cursed Memories.
 * Mao: The main protagonist from Disgaea 3: Absence of Justice.
 * Priere: The main protagonist from La Pucelle: Tactics.
 * Gig: The Master of Death and a protagonist from Soul Nomad and the World Eaters
 * Pram: The Oracle from Makai Kingdom.
 * Nisa: The NIS mascot character from Hyperdimension Neptunia.
 * Marona: The female main character from Phantom Brave
 * Ash: The male main character from Phantom Brave.
 * Evil Ranger Pink from the Axel Mode in Disgaea 2: Dark Hero Days who unlocks the Deathsabre class for Character creation.
 * Prism Red: The leader of the Prism Rangers, a group of recurring Disgaea characters. He unlocks the Prism Ranger class for character creation.
 * Main Hero B from the Axel Mode in Disgaea 2: Dark Hero days who unlocks the Celestial Host AKA the Angel class from previous Disgaea games.
 * Asuka Cranekick: One of Raspberyl's henchgirls from Disgaea 3: Absence of Justice. She and Kyoko were a one-pack DLC. Their purchase unlocks the Kunoichi Class.
 * Kyoko Needleworker: One of Raspberyl's henchgirls from Disgaea 3: Absence of Justice. She and Asuka were a one-pack DLC. Their purchase unlocks the Kunoichi Class.
 * Petta: A new character in the PSP version of Makai Kingdom. Is unlocked after completing "Command Attack" from Pirate Trial
 * Pirohiko Ichimonji: The original Unlosing Ranger and mentor to the new Unlosing Ranger in Zettai Hero Project: Unlosing Ranger VS. Darkdeath Evilman.
 * King Krichevskoy: Laharl's father and previous Overlord of his Netherworld.
 * Hugo: The president of the Netherworld and one of the antagonists in Disgaea 4.
 * DES X: Sister of Desco and Fuka, as well as one of the antagonists in Disgaea 4.
 * Nemo: The main antagonist of Disgaea 4.
 * A Necromancer Class designed by Kouhaku Kuroboshi (artist of Kino's Journey).
 * A Medic Class designed by Noizi Ito (illustrator of Burning-Eyed Shana).
 * Pirate Tournament mode. Get 5,000 cp or 10 consecutive wins and unlock Pleinair.
 * All-Star Demon Battle Mode.
 * "Tyrant Valvatorez" Scenario, an alternate play mode starring Valvatorez in his Tyrant days when he first meets Fenrich. Completing it unlocks Tyrant Valvatorez as a separate playable character in the normal game.
 * "The Fuka and Desco Show" Scenario, an alternate play mode starring Fuka and Desco.
 * A fight with Tyrant Overlord Baal.
 * Parts for a Mecha Laharl themed pirate ship.
 * Parts for a Mecha Mao themed pirate ship.
 * Parts for a Battleship Gargantua themed pirate ship.
 * Parts for a World Eaters themed pirate ship.
 * Parts for a Makai Kingdom themed pirate ship.
 * Parts for a Valvatorez themed pirate ship
 * Parts for a Phantom Brave themed pirate ship.
 * Parts for a Valvoga themed pirate ship.
 * Holt Village themed parts for Map Edit.
 * Evil Academy themed parts for Map Edit.
 * Space Battleship themed parts for Map Edit.
 * Soul Nomad themed parts for Map Edit.
 * Zetta's Castle themed parts for Map Edit.
 * Laharl's Castle themed parts for Map Edit
 * Phantom Isle themed parts for Map Edit.
 * Unlosing Ranger Base themed parts for Map Edit.
 * Themes for the Playstation 3 Menu.
 * Numerous Toro and Kuro themed weapons. However, considering the track record with previous Toro and Kuro weapons, these ones weren't likely to (and didn't) come to North America.

Vita Version
A port of the game for the PlayStation Vita titled Disgaea 4: A Promise Revisited was released in January 2014, roughly two years after the original version was released. This version contains all the DLC from the PS3 version on-cartridge and features a new bonus story featuring Tyrant Valvatorez and Sister Artina.

Steam Version
A port of the game for the PC was released in September 10, 2020, roughly nine years after the original version was released. This version contains all the DLC from the PS3 version.

Trivia

 * This is the first game to use HD sprites rather than the SD sprites seen in past games.
 * This is also the first (if not only) game to have the option to switch between HD and SD sprites.
 * In addition, this is also the first game where each of the demon characters of the main cast (Valvatorez, Fenrich, Desco, and Emizel) transform into a larger and more menacing form in their final Unique Skills.
 * This game is possibly the first one to specify the Sub-Species of each Main Character.
 * Disgaea 4 may have parodied the fact that with each following game in the franchise, the stories were seemingly getting less episodes.
 * Evidenced how Disgaea 1 had 14 episodes, while 2 had 13 episodes, 3 had 8 episodes and then 4 had the 7th Episode's title as Final Episode. In actuality, there were three "Final Episodes" after this first Final Episode. In short, there were 10 episodes in Disgaea 4, which is just only 2 episodes more than Disgaea 3.