I haven't had any people aggressive, toms or hens but I have a hen that was the sweetest thing to the chickens but then she went broody, set on an empty nest for 4 months and she was really mean she almost killed one of my hens and then she had quit setting and she was good again but now that's change again.
my Easter egger was the biggest by 2 weeks and like a momma to the rest. Now down to 6. They are hiding in the bushes and I am standing watch.