The world of comics is full of bold, awe-inspiring superheroes, from Dr. Strange to Silver Surfer, to Wonder Woman, Wolverine, Thor, Superman and more. These heroes defeat evil and uphold goodness and justice for all those they protect, triumphing over even the most insurmountable odds. And at the end of the day? Well, they go home, rest up, and prepare for the next time they must stand against evil. But as Spider-Man is known for saying, “with great power comes great responsibility,” and sometimes – whether because of a nefarious plot or a character’s own shortcomings – beloved superheroes aren’t up to that responsibility. Here are 5 powerful superheroes who veered from the path of righteousness and turned evil.