A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. A character letter is designed to show support for a defendant in a criminal case.These letters have the potential to influence the court. This is to let the Honorable Court know that your brother is a good person. He has a good job ( if he does) he is family oriented. A character letter plays a dual role. We provide templates and tips on how to properly address a letter to a judge, ensuring your letter begins and ends with the appropriate formalities. Dear Judge Mattison. 1. Begin with your personal information. Justice Panelli was the first of the four to record an oral history.