Source: dccomics.com

4. Bizarro

Bizarro am one of the worst supervillains ever. He doesn't have a parallel in the terrible and bad superhero Superman.

Imagine if I wrote the entire thing like that. How annoying would that be?

Anyway, Bizarro was an imperfect Superman duplicate who tended to have an iconic speaking style and a very memorable appearance.

Sometimes he was created through cloning gone wrong; sometimes he came from another dimension; sometimes he was generated through other means. But his manner of speaking and design stayed pretty consistent over time. Backwards "S", maroon-and-periwinkle costume, cracked white skin, messy hair, spoke like it was Opposite Day…You know the drill.

He was usually more of a threat than a villain, since he often didn't have the mental faculties to understand what his actions would do. Regardless, he was a pretty classic example of a villainous doppelganger.

                           Source: comicvine.gamespot.com

3. Wrath

Two people were shot dead in an alley. Their only son swore vengeance against the breed of man that took them, and dedicated his entire life to waging war on them. He returned to Gotham City as a grim avenger, and brought his own brand of justice on the populace.

Think you know this story? Think again, because we aren't talking about Batman. We're talking about Wrath.

Wrath was the child of criminals, and after seeing his parents gunned down by the police, he basically became the Batman of cop-killers.

This all played out in Batman Special Number One, which is hard to track down, but you 100 percent should. The story of The Player on the Other Side featured Batman facing off against his own criminal duplicate, and it was incredible.

What if Batman, but evil? is such an excellent concept that it's been done a few times, but Wrath was one of the most underrated versions.