User blog comment:SayuriDarling/The Blood of Olympus Official Discussion/@comment-24067344-20150510192427/@comment-26387135-20150511160444

Thats actually a hard one..i think overall,its a tie b/w Leo and Jason.We get to see all the dif. sides of their persona thruout the series.But if we go individidually by book, here's my choice..

TLH and SoN-nobody :P (everyone had equal character devpt,in my opinion)

MoA-Annabeth(i dont know why exactly,but i feel she had the best CD)

HoH-Hands down,Percy

BoO-Reyna and Nico(only reasons BoO was readable :D)