Sonic Universe #51 Reg Cover

"'When Worlds Collide,' Part 2 of 12. The crossover event of 2013 continues here! There are strange things afoot as Mega Man's world is menaced by a super-fast, blue attacker. Sonic's world is being stalked by a blue-armored figure with a cannon for an arm. Could these mysterious villains be Sonic and Mega Man? Or are they some kind of sinister copies? Mistaken identities and explosions galore in this explosive second part to the historic Sonic the Hedgehog and Mega Man crossover! Continues in this month's Sonic the Hedgehog #248!"