Win the indicated trophy in Season mode to unlock the legend for purchase 
at the WWE Shop for $12.000 (except for Jerry Lawler and Tazz, which cost $10.000):

Bam Bam Bigelow: Win the Unforgiven trophy 
Bret "Hit Man" Hart: Win the Survivor Series trophy 
Cactus Jack: Win the SummerSlam trophy 
Dude Love: Win the SummerSlam trophy 
Hulk Hogan: Win the WrestleMania trophy 
Jerry "The King" Lawler: Win the No Way Out trophy 
Mankind: Win the SummerSlam trophy 
Mr. Perfect: Win the Backlash trophy 
Shane McMahon: Win the Armageddon trophy 
"Stone Cold" Steve Austin: Win the Royal Rumble trophy 
Tazz: Win the No Way Out trophy 
"The Anvil" Jim Neidhart: Win the Survivor Series trophy 
The Rock: Win the WrestleMania trophy