A character letter is designed to show support for a defendant in a criminal case. These letters have the potential to influence the court.A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. 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. The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes.