Normal for a chick?

I am a newbie here, and brand new to raising chickens. We got our first chicks (bantam) from MM Hatchery on Feb.19. We split an order of 25 with someone, and won a coin toss for the freebie exotic chick. Below is a picture of it, we have taken to calling it Bully as it has literally had a very aggressive personality from day one. Now here is my question, is it normal for such a young chick to be aggressive to people? I have not had any personal problems with him/her, maybe because I am the main caretaker of the chicks. However, every time "Bully" has been out of the brooder when my sister is in the house, he/she will go to great lengths to attack her. He is just recently learning to 'fly' and is now aiming for her face. At this point it is basically just funny to see such a tiny angry ball of feathers and fuzz chase a grown woman, but it does make me wonder how he will be as he grows. (I have small children) I have no real idea what breed Bully may be, but am inclined to think rooster because of the aggression. I try to handle him as much as I can without stressing him out, which he pretty much hates. He refuses to even hand feed from me while most of the other chicks have taken to climbing up my arms to perch on my shoulders for short naps. I hope this is the correct place to post this, any and all ideas/comments are very welcome!!

 

Thanks to all of you for such good advice!! I was afraid if I forced too much attention on him he would start to dislike me more. Everyone else seemed to like me in their own time when they realized I always had food in hand. I will start working more with him and offering him some yummier snacks. Maybe he just has a personal problem with my sister, as she is the only person he outright attacks, everyone else he just kind of shuns and gives dirty looks. Lol. Thank you Atikin, I have to agree he is pretty cute even if he is a little hateful.