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. Dear Judge Mattison. 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. Introduce yourself in the opening paragraph. 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. Address the judge respectfully. Briefly introduce yourself and your relationship to the individual.