While Batman has earned a reputation for being one of DC's darker heroes, hence his Dark Knight moniker, his moral code is surprisingly noble. Simply put, Batman doesn't permit himself to kill anyone, even his most sinister foes. This quality is often his strong suit, though certain readers are in disagreement. As far as he's concerned, Batman will never fully resort to murder in DC canon, even if some wish he would.

Batman's no-kill rule was first canonized as part of DC lore in 1941's Batman #4 by Bill Finger and Bob Kane, when he instructs Robin that they are never to kill their opponents in battle. Since then, this aspect of Batman's character has become inseparable from his identity, driving every encounter with a villain from that point forward.

As crucial as Batman's rule against killing is to the type of hero he's become, there are some dissenters among DC fans who believe this strict code should be done away with. However, despite its downsides, Batman's inability to kill won't get erased any time soon.

Batman's No-Kill Rule Has Defined His Vigilante Mission for Decades

Bruce Wayne Has Resolved to Never Kill, Following In His Father's Footsteps

Batman's refusal to kill has been given various origins over the years, but it's recently been confirmed to be a product of his father's influence. Thomas Wayne abides by the Hippocratic Oath due to his career as a doctor, and this means that he does everything in his power to save as many patients as he can. Batman takes on an extreme version of the Hippocratic Oath, vowing to save everyone he can, regardless of whether they're worthy of salvation. Like his father, Bruce prioritizes his ethics over acting on his own biased judgments when lives are at stake.

Batman's no-kill rule isn't limited to DC's main continuity; in the new Absolute Universe, Batman also refuses to kill his enemies. To learn about the re-imagined origin of his code, check out Absolute Batman #4 by Scott Snyder and Gabriel Hernández Walta, available now from DC Comics!

Batman has crossed his own line before, surprisingly, albeit only in rare cases. For instance, in Final Crisis #6 by Grant Morrison and J.G. Jones, Darkseid's continued existence endangered too many to be worthwhile. Still, aside from special circumstances, Batman stays true to his word - for better and for worse.

Batman's Refusal to Kill Has Its Downsides, Yet the Pros Outnumber the Cons

If Batman Kills, Gotham City Will Become a Worse Place Than It Already Is

As benevolent as refraining from murder is on a surface level, there are valid complaints to be made about Batman's decision. For starters, if Batman doesn't kill off his villains, then they can continue to wreak havoc across Gotham City without any fear of being permanently stopped. Incarcerating criminals in Arkham as a means of putting them away is a flimsy solution at best, considering how many characters have successfully Joker fail to redeem themselves, so his efforts continue to be fruitless.

Ultimately, though, Batman's inability to kill is what sets him apart from justifying that behavior to set an example as a hero. In summation, Batman doesn't kill for Gotham's sake - and his own, from an ethical standpoint - more than anything else.

Sorry to All the Haters, But Batman's No-Kill Rule Is Here to Stay

Bruce Wayne Won't Bend His Rules, Even If People Disagree With Them

Critiques about Batman's strict regulations have run rampant for years, and they likely won't slow down. However, like it or not, Batman won't be crossing his moral line any time soon in DC continuity. He has imparted his code of conduct upon his fellow Bat-Family heroes, making it the defining principle of Gotham's vigilantes that dictates how they all fight crime. Therefore, it's clear that he'll be sticking to it long-term. As controversial as this decision may be, Batman wouldn't be the hero he is if he stopped showing mercy to his foes, so he's better off following his no-kill code to uphold the values of his mantle.