A character letter plays a dual role. Use specific examples of when you observed the defendant's good character.Describe a time you saw the defendant go out of his way to help someone in need. A character letter is designed to show support for a defendant in a criminal case. These letters have the potential to influence the court. "Learn how to craft an effective character reference letter for court proceedings with our comprehensive guide. A character reference letter provides employers with a thirdparty account of a candidate's personal attributes and character traits.