- For the version of this character before reality was rewritten as a result of the Super Genesis Wave, see Metal Sonic Troopers. You may also be looking for the Pre-Super Genesis Wave Timeline group known as the Neo Walkers, or the Mega Man X villain Neo Tiger.
|“|| "We're not so different, Metal Sonic..."
"Neo Metal Sonic."
With a completely self-upgraded AI, complete with an independent personality, Metal Sonic devised a plan to copy the lifeform data of Sonic and his friends, a task he accomplished by kidnapping his former master Eggman and using metallic copies of him to fool the heroes. During this time, he confronted Breezie the Hedgehog, building Casino Park for her as part of her new financial empire under his Eggman disguise. Breezie recognized Metal as an imposter due to his actions, as Eggman wouldn't be so generous. When Metal threatened to harm her should she warn Sonic, she brushed him off and the two apparently shared something of a relationship. Metal's plan was later discovered, but by then he was ready to use the gathered data to transform into Metal Madness and then Metal Overlord. Super Sonic, along with a super-charged Miles "Tails" Prower and Knuckles the Echidna, were able to defeat the robot, returning him to his original powered down form. (StH: #270, VG: SH)
Neo Metal Sonic has the ability to shapeshift, as seen when he nearly fooled Breezie that he was Dr. Eggman.
- Neo Metal Sonic was based on the transformation of the same name in the video game, Sonic Heroes.