Didn't say anything about "good" or "evil".



Now then that's why the word "protagonist" exists, because being the protagonist of a story is not by any means an indicator that said character is a hero, as it could also be a villain or just a bystander who witnessed the hero and is telling their tale.



However it's true that the word hero is often mistakenly used to refer to the protagonist. But that's just it, a mistake.