I guess it depends on what you mean by bad. ALL roosters crow. So if that's bad, you're out of luck. We have had about twenty roosters over the past five or six years, and of those we only had one "bad" one; he would attack our ankles, we fended him off with a broom. He met his maker when he challenged a skunk. We have given some roos away b/c we didn't want so many, some have died from predators or just illness; but ALL of our roos (we currently have nine) are friendly, and polite. For one thing I think they take cues from each other on how to behave, but, beyond that, we do spend a lot of time with them. We only had one other one who bit when he was a cockerel; I would pick him up and pet him when he did that. He hated it, but he is now the tamest, nicest roo we have, and I have trained him to climb to my shoulder and crow. If your kids are afraid of them, I'm sure they sense it. Any animal will scratch, and it does heal. We grew up with that in mind when we were little, and we were never afraid of our pet roos. Neither were our kids. If your kids roughly handle the bird, it's to be expected that they're gonna get scratched. Maybe try a quieter breed, a silkie or a Delaware.