"Get out of me swamp!" yelled Shrek. The fairytale creatures all ran out of his swamp, scared. People don't understand Shrek. Shrek just wanted to be alone because everybody feared him.
To everybody, he was the big mean ogre. If he went to the village, all the villagers would grab pitchforks and try to attack him or burn him with torches. Shrek wasn't all that bad if you got to know him.
But nobody cared enough to know the real him. Until Y/N came along.