I had a beautiful rooster a few years ago. I assisted him when he hatched (my first time) and raised him in the house. He was as crazy about me as I was about him. He liked nothing more than hanging out with me and sitting on my lap. When he was around 5 months old his behaviour changed overnight. One moment he'd be all sweetness and love, 2 seconds later I'd have a nasty puncture wound on my arm. I thought he'd outgrow it, so I reprimanded him, stocked up on band-aids and blamed hormones when DH threatened to kill him. But over a few weeks his behaviour got way worse. He got so bad that I could not cross the yard without him flying at me and pecking and scratching my legs. Then he attacked a friend of ours who came to visit. Then he turned on the hens. One day he trapped my oldest hen and she got caught in the fence. I battled to free her with one hand, while fending him off with the other. I wish I could show you what my arms looked like afterwards... After that incident I gave him away and accepted that my formerly beautiful, loving rooster would serve better as someone's dinner.
I understand how easy it is to get attached to a rooster, but really, keeping an impossibly aggressive rooster is simply not worth the hassle. Those beaks and nails and spurs can do serious damage, to humans and to other chickens. No matter how beautiful he is, or how much you love him. I know it's hard, but if he doesn't want to change, you'll have to give him up.
H