>>776664
Not specifically manga, but Sentry is a pretty good example
>All-powerful superman like character.
>But every time he does something good, something horrible is done by his arch-nemesis "Void".
This is especially disconcerting when Sentry saves the world and dooms it in the same action
If a character is too strong then you shackle them with some kind of rule stopping them from solving everything with their ability.
If a character is too wise then you put them against un-beatable odds with limited resources.