I still like Luke from PJO; I don’t think he’s a villain. Imagine you spend your childhood not knowing who your dad is and being left with a crazy woman who’s also your mother and can’t even recognize you, not to mention the psychotic episodes. Then you decide to run away with a GOLF CLUB for defense and find 2 other lonely kids on the street that you practically adopt and THEN you finally make it to a spot you were suppposed to be safe at only to be ambushed my a monster that kills your best friend who gets turned into a tree. Then you get shoved into a cabin with 50 other kids and never get sent on a quest even though you’ve been there the longest and was a permanent member and newbies are getting sent out despite your experience. And THEN your dead beat father finally sends you on a quest only for you to gain a scar across your eye and to almost die and then come back to camp realizing you still have to sleep in the same place with 50 other random kids. Bro that be traumatizing enough for anyone. Not to mention he’s only 19 and was 14 when he adopted two other kids. Bro just felt angsty for a second and then some dude comes along like “I’ll make everything better, I swear. I’m powerful enough”. ANYONE would take that offer. Then, his is (practically) little sister betrays him and the “good guy” from earlier ends up controlling his mind and possessing his body, making him betray everyone he’s ever loved.