It's important that he lives by a code

https://startrek.website/post/2086733

It's important that he lives by a code - Star Trek: Website

Yes, but if you kill two or more, it’s all good 👍
Batman should kill all killers in Gotham, last one being himself, then the number drops to 0

That would actually be a pretty cool premise. A hero who promises he will kill himself once all evil is defeated, as what he does although for good is evil itself. But people love him too much so they themselves become evil.

I guess kinda like a incredible situation, but more dark because the protagonist just wants to die instead of raise a family.

That’s actually a dope premise. Is there anything out there like that now?

Idk

One of the bad guys becomes a good guy not because it’s the right thing to do but because he genuinely wants to see if the hero will kill himself but the only way to promise to not be evil again is to be a good guy. Since the bad guy either has to die or stop fighting for the hero to be happy, but he wouldn’t really trust the bad guy if he just stopped. So although he occasionally messes up the bad guys is pretty good now