From the description on Matty collectors website
and an empty (or is it?) slot for Invisible Kid.
Sorry for my disappointment at that not being a possible hint at a bonus extra included in the set. That's how I took it. That 'Or is it?' should NOT have been included in the write up. I was satisfied with the crappy 'joke' package before I saw that. Even though I thought the joke sucked, and was a big waste of packaging.
I never said I didn't want the set. I think it's great. Its just tainted by that stupid empty slot.. sheesh