It’s not plot armor if it’s following the internal rules of the setting.
I’ll say this again: Plot armor only applies when you’re breaking the rules of
your own setting to get a character off the hook. A character who cannot die
because of in-universe reasons doesn’t have plot armor.
Having characters that are immune to harm is a pretty significant writing
challenge. It’s not insurmountable, but it does take more effort and care. The
jeopardy your character faces, needs to be a little more sophisticated than,
“what if I get hurt,” and “what if I die?”
Physical harm is usually enough to maintain tension for a normal character.
This can fail hilariously if your audience is so annoyed with them that they
actually want to see your character come to harm, but that’s a unique
When your character is completely immune to physical harm, you need to think about what
they’re actually doing, and what will actually happen if they fail. One man or
woman cannot be in two places at once. They cannot protect everyone. A cagey
foe can use that against them, distracting them by threatening their friends or
family while enacting their real plan. Or even simply finding ways circumvent
As a philosophical statement, all power must derive from somewhere. This isn’t
really a theological statement (though you can use it as one, if you really
want). For a character who has a power which renders them immune to harm, there
needs to be a cause. A smart villain can use this against your character.
Identify the source, and you can start to understand the limitations, or find a
way to subvert it. A character who receives their protection from some divine
source, might be mislead into betraying their creed, potentially invoking the
wrath of their deity in the process. A character who is protected by a mystical
artifact may only be protected from certain kinds of harm, or from certain
sources. Alternately, the artifact in question may be vulnerable to harm, not
A character who cannot be hurt is simply another puzzle for your villain to
solve. A character who is complacent in their immunity and careless with their
secrets is inviting their foes to find a way to break them.
Even a careful character who tries to hide their immunities is still
vulnerable to a foe who starts looking outside the box and finding a way to
stop them. If nothing else works, simply burying them in rubble or concrete
should be enough to slow them down, if the villain has a plan that’s close to
They may also look for means to temporarily strip your character’s immunity.
This may be as simple as a separate MacGuffin that renders your character
mortal, or it could be an attack on the source of their power, as I mentioned
Never underestimate the value of a kind word and a human shield. One of the
easiest ways to stop a charging hero in their tracks is to set them against
someone they care about. Turning their friends and allies against them, by
misrepresenting their actions is a legitimate option. It doesn’t matter if your
character can’t be harmed physically, when you can get their best friend or
true love to stand against them. Hell, sometimes just calling the cops or city
guard will be enough to stop an invulnerable hero in their tracks. Are they
really willing to fight their way through innocents to stop your villain? If
so, what will the long term consequences be?
A superhero who turns on the cops, guns down their best friend, and manages
to stop a hitman from assassinating the president has still destroyed their own
public image, and can never go back to who they were before. In the eyes of the
law, they’re still a murderer. Maybe that was your villain’s true goal all
along. Not to kill your character, but to make
them suffer for opposing your
villain in the first place.
Of course, your villain’s true goal may have been to use your immortal hero as
an example of everything that’s wrong with superheroes, and why they need to be
hunted down and obliterated, or they may have had a plan to spin the entire
situation so they come out looking like the real hero, and use your character
to cement their rise to power.
Having a character who can’t be hurt is an entirely legitimate choice. It
requires a different approach to how you handle them, and it requires a
different kind of story. You can tell some really fun stories with them, the
only limit is how ruthless you want your villains to get.