Koops

Koops is a mechanized Rhydon who allied with the Slothdinger Nation in order to take down Barbara, who has been violating his territory. The encounter itself failed, though, and it granted Koops many fatal injuries. Luckilly, Lord Rub-rub knew a great mechanising procedure, and so it was done. Now he is a robot, but with no emotion. He is permanently in the Nation as there is nowhere else for him to go.

Biography
Before finding the Slothdinger Nation, Barbara was a big problem for him. She kept trying to claim his land for her company, but he'd try to ward her off and keep a good relationship at the same time. After a few years of doing this, he realized it wouldn't work forever, so he had to enlist the help of a nearby nation, and the Slothdinger Nation was very close. He told Colin about his situation, but he said Barbara actually tried to kill him. This lead both parties to band together and try to destroy Barbara. But, as was bound to happen, they underestimated her technology. She was able to overpower EVERYBODY, and Koops was ultimately killed. The Slothdinger Nation revived him as a Mechanized Rhydon, but unfortunately, it was never the same. He lost his ability to feel emotion.

Strengths
As a Rhydon, his attack strength and defense were tank-like. No other Pokemon could even match him. He lacked in speed, however.

Becoming a mech fixed this for him. His attack was boosted, as was his defense, and speed was no longer a problem. But he lost his emotion.

Weaknesses
He used to fall in the Speed area, but now he has no emotion and runs just fine. That could be considered a weakness.

Inspiration
Seeing as he has no DC counterpart, he was probably inspired by some other existing character. Is this true?

Yes, yes it is:
 * http://bulbapedia.bulbagarden.net/wiki/Rhydon_(Pok%C3%A9mon)
 * http://bulbapedia.bulbagarden.net/wiki/Aggron_(Pok%C3%A9mon)