Metal Sonic v3.7 was built by Eggman to be much more powerful than all of his previous incarnations having their
Metal Sonic 3.7

Metal Sonic v3.7

combined combat data, and memories, Eggman also gave him his last Power Gem, a voice chip, and gifted him with Free Will in order to make him perfect. Metal Sonic then went to take down Shard, Now with the free will code, Metal Sonic decided to kill Antoine before killing Shard but stopped when Shard challenged him to a battle. Metal Sonic defeated Shard without much trouble but in the end blew himself up in order to destroy his own power gem, which he say as a weakness, he also severely injured Shard.

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