A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. 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 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. Learn how to write a powerful character letter to a judge on behalf of your son. I am writing this letter on behalf of a former student of mine who is presently before you on criminal charges and is due to be sentenced shortly. In the event that children must be brought to Court, adequate supervision must be provided for them.