Square Enix created a couple special costumes for Dissidia 012[duodecim]: Final Fantasy like Gilgamesh’s 4th form. Codes for this item were given out at a Dissidia 012[duodecim] battle tournament held in Japan this past summer.
The Great Genbu Armor’s design is based on Gilgamesh’s look in Final Fantasy Type-0. Since Final Fantasy Type-0 is in stores Square Enix is distributing the costume to a wider audience, but are not selling it on the PlayStation Store. Fans can only get Gilgamesh’s 4th form through Square Enix Members, a loyalty program site. Exchange 200 points on the Japanese site before December 19 and Square Enix will e-mail you a code PlayStation Network product code to download the outfit.