Makai Senki Disgaea: Welcome to Netherworld
Japanese title: 魔界戦記ディスガイア 魔界への招待状
Type: Special
Episodes: 1
Source: Game
Genres: Action, Comedy, Fantasy
Studios: OLM
Duration: 5 min
Rating: PG-13 - Teens 13 or older

A unique trailer found on both the DVDs and on the Disgaea 2 game advertising the anime. The animation for it is completely new, none is recycled from the show itself. Does a decent job of introducing the major characters and general plot, with new battle scenes and an altered plot so as to not give everything away. There's even a boom in shot at one point!