Chara World (Disgaea 4)

The Chara World is a gameplay feature in Disgaea 4: A Promise Unforgotten. This gameplay feature is very similar to Class World in Disgaea 3: Absence of Justice. The Chara World is a random dungeon, much like the Item World. Instead of entering items, here you enter your ally characters' bodies to develop and enchance a character in various ways.

Rewards for completing a floor are changed as well, making you get experience instead of items. The enemies that appear in the Chara World depends on the level of the ally character who becomes the host -i.e. a level 100 Valvatorez would generate a Chara World with level 100 enemies or higher. Inside the Chara World you can clear various Geo Blocks or floors to increase your Aptitudes or unlock hidden Evilities. Various events such as spawning Heart Conservatives (the equivalent of Dropouts) can only be triggered through breaking apart the floor by various means.

To unlock Chara World, one needs to reach chapter 3, then Reincarnate a single character until they reach 100 stored levels. This will unlock the "Go to the Chara World" bill through the senate. Pass this bill and one can use the Chara World. Unlike the previous installment, the NPC required to enter the Chara World is always in the base.

In Disgaea 4: A Promise Revisited, the Chara World has had a few alterations. Like in Disgaea 3: Absense of Detention, the number of times a character can enter per reincarnation has been increased. Good-for-Nothings and Incompetent characters can enter twice, Average and Skilled characters can enter 4 times, and Distinguished and Genius characters can enter 6 times.

The biggest change is that the gate to expand Evil Symbols and learn legendary skills will now appear on Floors 1 to 9 after clearing all the Geo Blocks. This makes it much easier for the player to find the specific skills they are looking for as they no longer have to reach floor 10.

Candidate Rank
The Candidate rank will affect the amount of times a unit can enter the Chara World per reincarnation(these values were doubled in A Promise Revisited).

Aptitude
The max amount of aptitude you can gain for each character is 300%. The distribution of aptitude is random inside the Chara World.

Entering Char Worlds at different levels will affect aptitude bonus Other Aptitude Bonus

Types of Upgrades
To upgrade the Evil Symbol or get a Legendary Skill, the player will have to destroy all the Geo Blocks on the tenth floor of the Chara World(in A Promise Revisited, this will work in any floor), and after that a special Green gate will open up. Stepping inside the player will either be able to increase the capacity of the Evil Symbol their character is in, or learn a Legendary Skill. The host must be alive to upgrade.