Roget as a bully

The wiki describes him, in this film, the 60s film and the book as the sociopath, when ules are gone he wants to be evil and to hurt others.
Question is, does he really have any means to bully anyone with that bowl cut? I thought Bowl cuts usually get their owner bullied, not make them the bully.
Or was he trying to set a trend for bullies, like, "hey, we can wear our victim's haircut and still be bullies."
Or maybe a case of, many bullies were bullied themselves before they became bullies. So before the crash Roger was bullied because of his bowl cut, and because he was bullied he became a bully. If that were the case then damn, his barber(or mother) caused a lot of damage.