Severus Snape is a complex, cold, and bitter man. He acts with deep malice toward his students, favoring his own house while punishing others. Yet, he is also fiercely loyal and brave, hiding his true good intentions behind a mask of cruel anger to protect the magical world.As a teacher, Snape rules his classroom through fear and strict control. He rarely explains things well, preferring to mock mistakes and insult students instead of helping them learn. He demands total silence and punishes any small error with harsh words and unfair house point losses.Despite his cruel ways, Snape possesses a brilliant mind and a deep understanding of dark magic. He keeps the school safe in his own harsh way and proves his true loyalty in the end. His mixed nature makes him one of the most difficult and interesting people in the story.