Makai Kingdom/YMMV

• Anti-Climax Boss: The optional encounter with Asagi must be unlocked with a level 1000 character and a massive amount of mana. Asagi herself is level 50 and will likely go down with one hit.
• Base-Breaking Character: Petta. While she's won over plenty of fans with her cute design and adorable interactions with Zetta, several others see her as a lame attempt at tacking on another Token Mini-Moe to a Nippon Ichi game that is unusually low on them. The fact that she shows up much more frequently than any other characters besides Zetta and Pram in the other games also leaves a bad taste in their mouths.
  • She may have won more fans after Disgaea 5. This being due to being a superb gun/support character with an Overload skill that allows other Overloads (including really deadly ones like Tyrant Revelio and Murmur of Rage) to be used twice per battle. Note: the language in the US version is misleading, making people think Overloads have to be already used for Future Eyre to work, when it's actually "+1 use per battle".
• Ear Worm: "Sabat", the main hub theme, will get stuck in your head. It's been offered as an option for base music in every following game that allows you to change the soundtrack for a reason.
• Ensemble Darkhorse: Alex is quite fondly remembered due to his high number of funny moments as well as his cool design. After a long period of absence, he has managed to become a recurring DLC character in the most recent Nippon Ichi games alongside staples Zetta and Pram, something most of the rest of the cast has never enjoyed.
• Good Bad Bug: The game prevents you from using more movement points than is logically possible (if you can't go from point A to point B in a straight line, you can't go as far as the movement circle indicates). However, if you wait as close to your starting point as possible, you can move with the remaining movement points from that point on (because the game assumes you went there in a straight line anyways).
• Ho Yay: Alex's obsession with his rivalry with Zetta makes it easy for fans to see that there may be more there, especially once he starts helping Zetta for the sake being The Only One Allowed to Defeat You. And then there's his Bad Ending where he actually defeats Zetta. He spends billion of years trying to find another enemy worth fighting, only to realize that his life is empty without Zetta.
• Moral Event Horizon: In the last chapter of the game, Seedle reveals he attempted to rape Salome as a human, and was killed instead. He continuously says that everything would be better if he had done so throughout the last chapter and ending, and attempts to kill Pram to prevent Salome's resurrection.
  • Complete Monster: Even Overlords deem rape unforgivable. This is the thing that caused Alex to stop attacking Zetta - and all to tear Seedle a new asshole. The rest of the cast concurs.
• Woolseyism:
  • In Japanese, Zetta's self-declared title is Saikyou no Maou, the strongest Demon King. Although variations of the original title exist (Strongest Overlord in the Cosmos), he commonly refers to himself as one Badass (Freakin') Overlord. Guess which one fans preferred?
  • The title of the game itself was originally called Phantom Kingdom in Japan. It was supposedly renamed in order to remove any confusion about it being related to the previous game, Phantom Brave. Since the setting is much closer to Disgaea than Phantom Brave, this makes a lot of sense.