Limited-edition toys run the gamut from ' My Little Pony ' to Marvel heroes to a mash-up of '80s favorites ' G.I. Joe' and 'Transformers .' Hasbro will have special exclusive toys available at Comic-Con in July Sets include toys from ' Jem ' and ' My Little Pony ' lines plus a ' G.I. Joe'/'Transformers ' mash-up. Limited number of exclusives are slated to be sold after the con online. Lines are inevitably part of every San Diego Comic-Con attendee's convention experience, and not many lines are as impressive as the one at the Hasbro booth. Crowds flock to see what's coming out from such pop-culture toy lines as G.I. Joe, Transformers, Marvel Comics, My Little Pony and Star Wars, but also to get their hands on the exclusive merchandise only available at Comic-Con. The crop on sale July 18-21 is, like every year, custom-tailored for its core contingent, according to Derryl DePriest, Hasbro's vice pre