A character letter is designed to show support for a defendant in a criminal case. These letters have the potential to influence the court.Introduce yourself in the opening paragraph. First, introduce yourself and explain your relationship to your boyfriend and how long you've been together. A character letter to a judge should establish your credibility, paint a full picture of the defendant and be respectful, among other things. Learn how character letters can help you get charges dismissed or reduced, get a more lenient sentence, or get treatment instead of jail. A character reference letter for court is a written statement advocating for an individual's moral standing, which can influence the judge's decision.