Of course, I don't mean anyone who has absolutely no "redeeming qualities," even if these redeeming qualities aren't entirely social, but just a character who won't be loved by the readers simply due to possessing an entirely unjustifiably horrible personality. If it is possible to make such a character without allowing it to fall into "Cliche" territory, is it possible to make such a character interesting and develop them. Of course, they'll have a goal that isn't necessarily bad, and could actually be good, but still doesn't justify their absolutely shitty personality. And, at the same time is it possible for an "antagonist" to be a very likable character but, in contrast with that, have a goal that contrasts greatly with that. Something that could be selfish or be a result of irrational thinking, and this goal conflicts with the protagonist's. And through these revelations, by the end of the story, due to development, be it positive or negative, and when everything of both characters is known by the readers, could it be possible to at this time, have the protagonist and "antagonist" be at about the same level of likability so that the audience isn't really sure who they're rooting for at this point -- that they may be okay with the protagonist because of the potential "goodness" of his goal and his development or with the "antagonist" because the goal, albeit irrational or potentially insane by some means, is still somewhat selfless and the "antagonist" has already been established to be someone likable and being likable would make people root for you. And if it possible, how would one go about making it happen?