I think bad.
a bad reputation
I have got a (good or bad) reputation and you have not got a (good or bad) reputation.
Sometimes. It depends on your reputation. If your reputation is good and it proceeds you then it's a good thing. If your reputation is bad and everyone hears about it, it is probably a bad thing.
He was a bad wolf and then he is good
It means that you have a reputation and that people know all about you (as far as your reputation goes) before they meet you. If you were to meet Hitler or Mother Theresa you would have a good idea what to expect. If your reputation is good then its a good thing. If your reputation is bad (and the expression is usually used in connection with bad reputations) then it is a bad thing.
you buy a bad reputation
Type your answer here... bad
To behave in a way that changes a good reputation to a bad one.
Yes, for instance someone can have a good reputation, while someone else can have a bad reputation.
he was a good emperor
If you are asking how you as a kid can fix your own bad reputation, I would say to do good. Volunteer and help others when you can. You have choices in life and different roads to travel based on where you start. Start in a good place so you will end up in a good place. Do what you can to prove others wrong. Understand why you have a bad reputation to begin with and make sure you don't do that again. If your bad reputation makes you feel bad about yourself, get into sports or some activity that empowers you. If you are in sports your teammates will stick up for you. Be really good at something. If you are really good at something the bad reputation will, over time be overshadowed by whatever you are good at. You will become known for what you are good at and the bad reputation will be a thing of the past.
The wolf maks is to represent the good or bad of people