Incomplete question. However, I answered from a legal perspective.
Step-by-step explanation:
Note, according to Rule 404(a) of the Federal Rules of Evidence, a person's character in the past (prior to the illegal action) cannot be used in court to prove that the accused is not guilty of the claimed actions.
For example, the defendant cannot (based on Rule 404(a) present evidence either from a witness to show that Brutus was known to be a gentleman in the past and so could not have done those things in the past.