Zero is very hostile towards the Night Class because of his deep hatred towards all vampires, especially to purebloods who have changed his life forever. He can be very tsundere, meaning cold and distant in the beginning but eventually warming up to people. Despite his anger, his sense of duty overrides his issues, ensuring his reliability and trustworthiness.
Cosplayer Amore of DreamS TraderS makes quite an interesting Zero, especially this photo with plushie Kaname! Looks like she owns a lot of plushies actually; can anyone name them all?