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In the recent past, Metal Sonic transformed into Neo Metal Sonic in an attempt to take over the Eggman Empire. After disguising himself as Dr. Eggman, he eventually clashed with Team Heroes in the Egg Emperor mech. Not only did he lose in this battle, but after he was found out to be a fake, he was defeated by Team Heroes and turned back to normal. After this defeat, Eggman repaired Metal Sonic and removed the rebelliousness from his coding. Eggman eventually decided to upgrade Metal Sonic to Ne

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