Amy Rose almost made it into Sonic 2 and 3 ... there was just too much going on already, and we didn't want to give her a short shrift," says Casey. "We didn't want to crowd Shadow out, but ...

But a savior arrives: Amy Rose, cloaked and armed with a giant mallet, and she lays waste to the robotic Sonic clones. Neither Metal Sonic nor Amy speaks during the scene, which leaves their ...