Reputation is what you are perceived to be and character is what you really are. How aligned these two perceptions are depends on a number of factors. Some you can control , others you can’t.
What you can control is the alignment of your words, thought and actions. Do you really speak your mind? Do you really say what’s going on in your head? Or do you filter it in such a way that it becomes sterile and void of any truth?
People really want to know the truth, that is, your truth. Speak it, live it, be it. This way people won’t have to second guess you and they will know loud and clear what you stand for. Character is a choice , reputation is chosen for you.