Wal-Mart exclusive.
A couple of cases of retail samples of this were accidentally left out for sale in a Wal-Mart in Kansas several weeks before the official release. Those versions may have slight paint differences from the general release and were packed with mismatched comics. They are not listed here, but you can check them out on the blog: Marvel Legends: The Emporia, Kansas Giant Man Series Retail Samples
For any normal 13-year old, a headache could simply be the physical manifestation of the daily stresses of life. But for Kitty Pryde, a simple headache turned out to be the first sign of her emerging mutant abilities. Courted by both Professor X and Emma Frost to join their very different academies for mutants, Kitty chose to go with Professor X. Her achievement did not go unnoticed and she soon joined the ranks of the X-Men as Shadowcat.