Complete

The Complete series is remastered games:
 * Disgaea 1 Complete
 * Disgaea 4 Complete+
 * Disgaea 5 Complete

The purpose of the Complete games is to provide a definitive version of the game they are based on. This includes providing any DLC within the game itself, and updating mechanical features to make the games more in-line with one another. This includes updating Class designs (such as the Skulls) and providing quality of life improvements.

Trivia

 * Currently, Disgaea 2: Cursed Memories and Disgaea 3: Absence of Justice are the only mainline games to not have Complete versions.