Goroboyz represent
I always have a hard time deciding on My Absolute Favorite but Akechi's definitely a contender.
I've got a soft spot for mentally ill kid characters who end up doing terrible things because they were manipulated into serving that purpose, I guess.
I only really have to think about what probably would have happened to Akechi had he succeeded and man, yikes. He may have done terrible things, but poor kid.
Let's be real here, if he had managed to expose Shido the way he planned, then there's no way he would have been able to bask in his fame after that. Shido would absolutely have dragged Akechi down with him.
Basically he was in way too deep to have any sort of positive outcome happen to him. Shit sucks. I'm glad that the Phantom Thieves recognized how shitty his life was even while still condemning him for his actions.
I do think that his "death" (off-screen deaths cannot be trusted) was kind of a cop-out, though.
It feels like the game was trying to just avoid having to answer the question of "What do you do with a person who's been so abused they become an abuser?" and unceremoniously removed him from the story before that question could be addressed.
IMO it would have been much more interesting had Akechi been able to take up the Thieves on their offer to rejoin them, and then had to deal with the question of what to do with him later.