History YMMV / DisgaeaRPG

** Kagemaru. While a rather fair Axe-wielding unit for PVE, for PVP she became an utter monster thanks to her "Iron Wire Stealth" self-buff. For the five turns it's active, she gets both an ATK buff and will counter-attack anyone that hits her, including AoE skills. Add in her fourth Evility, which gives her a massive 80% ATK buff for a turn when hit, and with some properly set-up teammates and equipment, she can reliably serve as the team anchor for defensive missions.

* EnsembleDarkhorse: Out of all the AlternateUniverse characters, Xeno Sicily received the most attention. Sicily growing up in the Netherworld instead of Celestia has been a popular FanficFuel ever since her debut in ''Disgaea D2''. Additionally, many found her to be much more interesting than the original, preferring Xeno Sicily's {{Chuunibyou}} and {{Tsundere}} antics compared to the more traditional little sister tropes found in the original.

** Formal Valvatorez, like NISA, is also enable comebacks thanks to his very tanky kit. His Neo Absorption

* NISA. In PVP she's known to enact comebacks thanks to her second Evility "Indomitable Guts", which will revive her with 1 HP if she'd take fatal damage. Doesn't sound like much, but it grants her an immediate turn, which synergizes with her fourth Evility, "Heroic Power", which gives her 100 SP if her health is at 1% or less, and her S-rank power skill "V Extreme", which increases in power the lower her HP is. However, her chance to activate her Guts drops per activation, meaning she can be beaten if focused on enough.

** Attired Rozalin, also known as New Year Rozalin. There was a lot of hype going into global version's New Year's event as she was the first SS ranked character according to JP tier lists and it's hard not to see why when her main evility boosts the party's Action Gauge by 100 at the start of the wave, helping to ensure the player's party goes first. While her use began to wane as better unit started coming out, she returned with a vengeance when PVP was introduced as her main evility activated immediately with no conditions, allowing players to get use out of her with little investment.

** Ryubence from ''VideoGame/TheWitchAndTheHundredKnight'' during the game's crossover event. Despite being one of the Great Witches, she is a very minor character in her home game compared to Metallia, Hundred Knight, and Nezaria with many expecting either Visco, Lucchini, or Malia making it in.

** Calamity Adell. While already a powerful unit on his release, he soon became the bane of PVP due to his Anthropology skill, which grants +1000 to his Action Gauge whenever he kills an enemy unit. In PVE, it's not so useful due to how bulky enemy units are, but in PVP

* UnexpectedCharacter: To say fans were shocked about the release of Calamity Adell and Evil Rebirth Mao from the Badass Banners would be an understatement. Both characters are interpretations of Adell and Mao from Disgaea 2 and 3's Bad Endings, both of which are considered non-canon, are notorious for being some of Nippon Ichi's most shocking endings (especially 2's bad ending, which involves Adell eating his siblings), and have not been referenced in any capacity since the release of their games.

* UnderusedGameMechanic: Character Episodes is a feature where certain characters will share you their stories as you level them up and earn you some Nether Quartz in the process. There hasn't been any new ones added since the first wave of characters.

* UnexpectedCharacter: To say fans were shocked about the release of Calamity Adell and Wicked Mao from the Badass Banners would be an understatement. Both characters are interpretations of Adell and Mao from Disgaea 2 and 3's Bad Endings, both of which are considered non-canon, are notorious for being some of Nippon Ichi's most shocking endings (especially 2's bad ending, which involves Adell eating his siblings), and have not been referenced in any capacity since the release of their games.

* UnderusedGameplayMechanic: Character Episodes is a feature where certain characters will share you their stories as you level them up and earn you some Nether Quartz in the process. There hasn't been any new ones added since the first wave of characters.

* UnexpectedCharacter: To say fans were shocked about the release of Calamity Adell and Wicked Mao from the Badass Banners would be an understatement. Both characters are interpretations of Adell and Mao from Disgaea 2 and 3's Bad Endings, both of which are considered non-canon, are notorious for being some of Nippon Ichi's most shocking endings (especially 2's bad ending, which involves Adell eating his siblings), and have not been referenced in any capacity since the release of their games.

* IAmNotShazam: Many fans refer to all the Disgaea AlternateUniverse counterparts as "Xeno" despite the game revealing that XENO is an organization within the alternative universe. Only the characters part of the organization are given the XENO title while everyone else from the alternative universe are referred to by their title, such as Saint Etna and Thunderlord Laharl. Additionally, most fans tend to add the "Xeno" title at the beginning when the title is meant to be added at the end with all capital letters (ie. Fuka XENO).

* UnexpectedCharacter: To say fans were shocked about the release of Calamity Adell and Wicked Mao from the Badass Banners would be an understatement. Both characters are interpretations of Adell and Mao from Disgaea 2 and 3's Bad Endings, both of which are considered non-canon, are notorious for being some of Nippon Ichi's most shocking endings (especially 2's bad ending, which involves Adell eating his siblings), and have not been referenced in any capacity since their release.

* NeverLiveItDown: The [[TroubledProduction troubled initial launch]] has led to fans labeling ''Disgaea RPG'' as [[CreatorKiller the game that nearly killed Nippon Ichi]]. The constant maintenance and its removal from the app stores alongside the financial issues it brought about (with some reports saying that Nippon Ichi had to take drastic measures to pay employees) are not easily forgotten despite Nippon Ichi and ''Disgaea RPG'' doing better since then, with the latter receiving a global release. It's gotten to the point where some fans still believe Nippon Ichi is in dire straights and that the continued survival company rides on the success of their future games, particularly ''VideoGame/Disgaea6DefianceOfDestiny''.

* UnexpectedCharacter: Calamity Adell and Wicked Mao from the Badass Banners. No one expected Disgaea 2 and 3's bad endings to referenced in any capacity as neither have been referenced since the release of their games.

* UnexpectedCharacter: Calamity Adell and Wicked Mao from the Badass Banners. While SuperPoweredEvilSide characters are to be expected from the banner such as Killidia and the true Overlord Zenon (Awakened Rozalin), no one expected variations of Adell and Mao based on their respective ''bad endings''.