[zozbot234]

> "most" bullies are sociopaths or narcissists

Um, I never said that. I talked about tendencies, just like you did. It's not very meaningful to say what bullies "are", but bullying does generally involve at least some degree of instrumental aggression and callous/unempathetic attitudes. Such attitudes might arise out of simple imitation like you said, but only if someone else is actively demonstrating them - and this will generally be someone in the peer group who holds significant social influence on others.