|Metal Sonic did not originate from fanon, and more information can be found on their respective wiki(s). You may read more about it on the following wiki(s):|
|Full Name||Metal Sonic|
|Gender||None, but referred to as a male.|
|Location|| Death Egg, Mobius |
|Main Weapon(s)||any weapon Sonic has|
|Ability/ies||sharp claws, chaos control, super speed, homing attack|
|First Appearance||Sonic CD (1993)|
|Family and Relations|
| Dr. Eggman (creator)|
Sonic the Hedgehog (enemy)
Amy Rose (common hostage)
|Latest Appearance||Sonic the Hedgehog 4: Episode II (2012)|
Metal Sonic is a powerful robot created by Dr. Eggman, for the sole purpose to kill the famous Sonic the Hedgehog and assist his creator in world domination. However, he has betrayed Eggman a few times to conquer Mobius on his own.
Metal Sonic will do anything to make sure Sonic is out of the way, even if it means wiping out Eggman. There are times when he still follows his orders, but this is usually for his own purposes.
Metal Sonic makes an appearance in Team Badnik in Sonic Heroes 2. Here, he has the ability to talk, and talks much; his angst about having been abandoned by Team Eggman catalyzes incense in the rest of the team. Much of this storyline involves preparing assault on Team Eggman.
Metal Sonic appears as the main villlain in Sonic Generations 2, and sends Sonic to a land when time is frozen. In the end, Metal transforms into a Super form of himself, but ultimatly fails to destroy Sonic and fulfill his reason of creation. After the credits, Metal gets into a humorous conversion with his Classic and Modern form of his own creator involving who's plan was better in the first place, how the Modern Eggman should have never created Metal, and the Classic Eggman, unaware of Metal's previous betrayal, arguing with his Modern self that Metal is an excellent creation.
Metal Sonic appears as the main character in Metal (2013 game). In the game, he can protect the Earth, or make evil choices and stay the way his currently is. He roams Station Square, defeating Dr. Eggman's robots, and everything in his way. He can transform into Neo Metal Sonic and upgrade himself in Tails' old workshop. In the story, he rampages trying to find Sonic, but is defeat by the hedgehog. He then defeats Shadow, Dr. Eggman's robots, and Silver Sonic II, and collects six Chaos Emeralds before destroying the Death Egg in space, or even destroying Dr. Eggman, depending on what choices he makes.
Metal Sonic appears to be recreated in Sonic CD II. Robotnik also created his past self, Silver Sonic, and his future self, Mecha Sonic. All three robots captured Tails, Knuckles, and Amy. When the 2 robots have been destroyed, Metal Sonic and Robotnik is the final boss with Amy captured. Sonic destroyed both villians and ran out of the Death Egg III exploding with Amy in his hands. At the end of the credits, Robotnik was in his Egg Mobile livid as he crushed Metal Sonic's head, which was the last part of the destroyed robot.
- In Sonic CD 2, Metal Sonic's actions in the Final battle is a lot like Super Sonic from Sonic 2 on the SEGA Genesis.