Little did the Danes know that the song would bring them massive disaster. Whenever Grendel tried to befriend the Danes, they always ran away, hid, or even attacked him. The men attacked by Grendel were those who were particularly hateful towards Grendel; for Grendel, they were the real bad guys who wanted to kill him. The innocent ogre tried to be friendly and dissuade them from bullying them, but the arrogant Danes didn't even try to listen. SO. How did Grendel become a murderer and a psychopath? It is true that Grendel's behavior, which destroyed the Herot Hall for twelve years and killed many people, cannot be completely justified, but those who caused Grendel to become a psychopath could have been saved if they had been a little nicer and warmer to him. For example, there was a famous serial killer in Korea, Yoo Young-Chul, who was a psychopath and killed around ten people. After being sentenced to life in prison, he said: “When I was young, I was born and raised in a poor family. My homeroom teacher in my elementary school was an abusive teacher. But…. One time I didn't do my homework and couldn't bring in the supplies. If my homeroom teacher