Jack had a cold heart and was rude to everyone, but he was humbled real fast when everyone he bullied circled him and beat him, hurt him, did the same things he did to them. Jack was so scared because his step father did the same at home, he abused him and he just discharged himself at school but it wasn't an excuse for his behaviour, he acts under fear and has been raised to submit to fear and do stuff under the fear influence.