Nightwing's loyalty to Batman led to a tragic event that caused Batwoman's death. Despite his noble intentions, Dick's blind loyalty sometimes endangers others, as seen with Damian and Alfred in ...

However, there’s one villain that many think Batman should make an exception to that rule — the Joker. The Joker is a mass murderer who has killed thousands of people over the years.

In alternate storylines, Superman has killed fellow heroes like The Flash, Wonder Woman, and even Batman. Despite his great power and his patented heroism and goodness, Superman has been shown to ...