I hate plenty. But, I will only name five Rei from Highschool of the Dead for being a very shallow and annoying character, especially compared to Saeko Dokuro from Bludgeoning Angel Dokuro-chan for being annoying and really mean spirited Yuka fro Elfen Lied for being an incestuious freak, as well as annoying Louise from Familiar of Zero for being a terrible tsundere And Suguo from Sword Art Online for being a creepy child harassing sadist
Here's some I highly dislike in no order except the first one: Shou from Fullmetal Alchemist (*bleh* too terrible for words) Sasuke from Naruto Shippuden ONLY [NOT in the original Naruto!] (the overly-angsty emo) Makoto from School Days (the wannabe-playboy) Yuka from Elfen Lied (the incestuous jealous creep) Nina from Code Geass (the table-rapist freak)