i didn't want to draw all that metal so I just did the head. It's just the earth dragon but with metal plating, razor claws, and no wings.

The metal dragon is very similar to the earth dragon, yet separate in many ways too. It's got heavy metal plating grown right onto it's body, which allows it to be even more resistant than the earth dragon, though the underbelly is still quite vulnerable on the metal dragon. It's got sharper teeth and claws, and also no wings. This dragon would be far too heavy for its wings to be useful, provided it had any.

While the earth dragon is on equal terms with humans, mostly just being territorial, this one is a lot more polarizing, either viciously defending its home or integrating into humans like they were part of its pack, almost their armored defender.