To make your efforts to relive, rewrite and redefine WWE history even more complete, the game features additional ring attire that can be unlocked by playing through the various game modes”, however for those that don’t want to wait there are several codes to unlock alternate attires for the legends:

UndertakersTombstone = WrestleMania 13 Attire
TheBirdmanKokoBWare! = Alternate Koko B’Ware
HawkFromLegionOfDoom = Legion of Doom 2000 Attire
TheRoadWarriorAnimal = Legion of Doom 2000 Attire
ShawnsSweetChinMusic = The Midnight Rocker’s Attire
WithManagerJimmyHart = Alternate Jimmy Hart
CobraClutchSlaughter = Iraqi sympathizer Attire
IronSheikCamelClutch = Col. Mustafa Attire
BrutusTheBarberShop! = WrestleMania IX Meg Maniac Attire
UnlockTheRockBottom! = Street Fight Attire