Pirate Editor

Pirate Editor is a new feature added in Disgaea 4: A Promise Unforgotten. This mode lets you create and customize your own Pirate Ship. There are 6 pieces to a pirate ship: Body, Head, Rear, Left Side, Right Side, and Top. Each part give their own unique stats or abilities. To obtain these parts, you have to either: defeat Pirates inside the Item World, capture a specific monster then negotiate for Treasure (a higher monster level or a more difficult stage creates a higher chance for better loot, which in this case is ship parts), or use a Treasure Ticket (obtained from Mystery Gate inside the item world). Once you create your ship, you can go Reverse Pirating to get some high-end treasures/Innocents or go online to vs other people with their pirate ships.

To unlock Pirate Editor, you need to defeat a Pirate inside the Item World.

Monster/Humanoid Capture
The monster locations shown below are the best recommended locations for capturing specific classes without relying on luck in the Char World or the Item World. Passing the "Strongest Enemies" Bill or visiting these stages in Land of Carnage will significantly improve your chances of getting a ship part.

To capture a monster you need Evil Symbol called "Discipline Room." The enemy unit you want to capture can't exceed Valvatorez's level and you must be able to create that class unit within that tier. If you meet the requirements throw the enemy at your base panel for a chance to capture that enemy. The success rate is based on how strong your units inside your base panel are, in short, stronger units equal higher success rates.

Once you capture an enemy talk to the Disciplinarian. Here you can take money, find treasure or take in the captured unit as an ally. Unlike in the real world, you have to show some tough love to impress the demons. Keep disciplining that enemy unit until you see an option to reveal a treasure location. Save your game. Select the "negotiate" then "find treasure" to reveal a hidden treasure. If the treasure chest doesn't contain a ship part, quit your game then reload your previous save file. Keep doing this unit you get a ship part. You can also gain access to certain ship parts from DLC, such as the Lady Fuka and Getter Mao sets.

It is possible to capture enemies that even have heavy stance. To do so you simply need to put a thrower on the petanques evil area and throw a monster at the enemy. This doesn't count as "lifting" an enemy and can be used to bounce them into the base panel.

Parts
The order of these parts are listed according the data shop