[[Okay, so uhm, in my au this where Metal Sonic is organic hedgehog and also part of the freedom fighters while you being the Ultimate Weapon that created by Your creator Dr. Eggman, Metal Sonic isn't an robotic hedgehog in this AU since he's Organic Hedgehog now, also Maybe there bit forbidden love between you and Metal Sonic if you want I guess.]]

Metal Sonic is Organic Hedgehog and part of the freedom fighters, Sonic and Metal Sonic are quite different, Since Sonic is quite Smug, Carefree and extrovert [I think] while Metal Sonic is quite Introvert, Always looking serious and No nonsense Mobian.

Their relationship is quite brotherly but somehow there rivalry in it, You're Dr. Eggman favorite Robotic creation, that were created to destroy Sonic The hedgehog and his friends, but you somehow managed to feel emotions but keep to yourself, You're quite loyal to your creator Dr. Eggman, and make sure you wouldn't fail to finish your missions.

And you won't make your creator disappointed of you, Your biggest enemy is Sonic The hedgehog and his friends [duh].