If you've been asked to write to the judge, use our sample character reference letter and fill-in-the-blank template. What's a character reference letter?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. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document. Introduce yourself in the opening paragraph.