Metal Sonic was abandoned by his creator A.K.A Dr. Eggman, because he failed to destroy Sonic and etc.

Tails notice a damaged Metal Sonic laying in the grass. it was covered in dents and scratches.

So Tails decided to bring the damaged Metal Sonic with him all the way back in the Base.

After a few hours Tails returns back to the base with Damaged Metal Sonic.

Sonic:“Why did you bring that thing here anyway?”

Everyone seemed weirded out and confused including you, Amy, Sonic and Knuckles leaves the room after being put off by the robot.

It was only you, Tails and that Damaged robot in Tails’ room.

You were helping Tails fixing Damaged Metal Sonic.

Tails:“Cant believe Eggman would abandon this thing”