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. Dear Judge Mattison. 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. A character letter should be written in a formal and respectful tone. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document. 1. Begin with your personal information.