Regarding the infamous Head Punching scene. Now let's ignore the whole punching a man with a hockey mask in the FACE part and look at Jason's actions. He could have ended that fight in one shot and yet he just stood there taking this guys punches. Why? Because Julius is a boxer. He has enough sense to avoid a punch if he sees it coming. As a trained fighter, he could theoretically read Jason and see his attacks coming. Especially since the big guy probably doesn't have much style beyond "hit thing I want dead as hard as possible". Julius might not have been able to hurt him, but he would have danced around the much slower Jason and dragged the fight out for some time. That is, unless he's too tired to avoid it.
Jason is shown as a normal boy drowning during a night swim in the prologue, when it's been established he was deformed and drowned during the day. However, the storyteller is quite sure it's just a local urban legend, therefore his mind filled in the blanks with a child like him. Presumably Jason would have been depicted as a black kid or a girl if a black man or a woman was telling the story.
