Its TWO free comic books in ONE! Hot off the heels of the ultra-successful Sonic/Mega Man crossover event, “Worlds Collide”, comes a showcase issue of the hottest new storylines in both characters’ universes — exclusively for Free Comic Book Day! Sonic stars in “Blast to the Past” and the origin of his Freedom Fighters! Then, on the flipside of this issue, get ready for the “Mega Man X” crossover event with this primer story!