Sonic the Hedgehog #39

"Rage Against the Machine": One of the most famous Sonic epics of all time, this story launches the Mecha Madness saga which will see Sonic fall prey to the vile Robotnik's device of doom: the roboticizer! The Freedom Fighters are forced to combat their valiant hero as he is turned into Mecha Sonic: a robot version of himself with enhanced powers and some frightening surprises up his sleeve! Looks like the heroes will have to sound the "red alert"!