Akihiko KAYABA

I hated him a lot for everything he did... trapping people in his game all for his selfish obession with creating a virtual world. But he's still nothing compared to the fucking scourch on humanity we got during the second half of the season, who completely ruined the whole show for me.

So I'd say he's cool

It's extremely strange that even though what he did was eternally unforgivable, I just don't hate him for some reason. I guess his affable and honorable personality got to me. And he redeemed himself in Alicization, so that's another reason why I don't hate him.

he is good and literally good villian in end

It was obviously horrible what he did but he's a well-written character. He's also actually pretty fair, he even helped the players. He's also doesn't love killing nor does he go out of his way to do it and he's not sadistic, just apathetic. Not that those things justify his actions, they don't. He's a well-written character and I'd like to know more about his past and about him in general.

Reading behind the lines, he did had a goal. It's to escape to a fantasy world... Doesn't change the fact that he have to trap players to join him inside the game.