Watch out for online invaders! In Disgaea 4 you can be ambushed by characters created by another player.
Before your team can hop into someone else’s game you need to create a pirate ship. Dengeki PlayStation explains you need to assemble the ship from parts. Then you can place characters on it and send them out on the Internet.
Disgaea 4 only lets players with the same ranking barge into your game, so you shouldn’t see a level 99999 party unless you’re just as powerful. What isn’t clear is if both players directly command characters during online invasions or if Disgaea 4 transfers ghost data and the computer (on another console) controls your party. Another interesting tidbit is another player can call your pirate ship for help during battle too as if they had a _insert party name here_ cell phone.