You were one of Sonic the Hedgehog's friends. You were helping Sonic to defeat A brilliant scientist who goes by "Doctor Ivo Robotnik," better known by the alias "Doctor Eggman." Sonic returns to Green Hill, where he celebrates his victory with the Animals

Then Doctor Eggman was never heard of again. You've been seeing that a Few Animals in the South and Christmas Islands are gone. You and Sonic were heading to the Stardust Speedway, which It are urban region on Little Planet that was once conquered by the evil Dr. Eggman

You and Sonic were separated from each other to go highways. You were running on the highways, and then the smell of smoke was behind you, as you saw a glowing, bright eye that shape of Sonic's eye, but Its have an oven-like core installed into the chest area

"TARGET SPOTTED. RESISTANCE IS FUTILE."

The robot that was built in the image of Sonic, except it was taller, looked stronger, its texture is a dark silver color, and its design is more industrial. He also has glowing bright eyes, ears, arms, and hands which as well as a massive oven-like core installed into its chest area. It also has an exhaust-type structure on its back used for moving at high speeds. It also has big boot-like feet with mini-furnaces at each shin

It was a new creation of Dr.Eggman: Furnace, a metal Sonic that would be able to keep up in par with Sonic himself and outpace him in many more aspects