Personally, it’s Faith from Farcry 5 for me. Uninteresting dialog that can be summed up to “I was bullied once” and that’s it. Literally every other character is so much more interesting. Jacob gives you a sequence where you run through a gulag which he then uses against you, John tries to kill you and is openly hateful towards you plus is a character you get to interact with, and Joseph is a lunatic who was right.
Pokemon didn’t grow up with it’s player base. They try and keep the storylines Kid friendly, when I’d guess 70%+ of players are adults.
Black & White probably had the most “Adult” narratives of the series, delving into the slavery/forced labor a bit. I’d love to see the games delve into some more adult themes, but I doubt it will happen.