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. The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes. Defend a friend or family member's moral character in court. Use our Character Reference Letter for Court template to easily write your document. Your Information (first thing that goes on the inside of the letter). The goal of character reference letters is to tell the judge a story. To give the judge insight into a defendant as a person. A character letter is a letter of support from people who know you to help show judges and DAs the positive sides of you.