A defense lawyer, also known as a criminal lawyer or attorney, is an individual who represents individuals or organizations in legal matters. Specifically, their role is to defend clients who are accused of committing crimes by presenting evidence and arguments that challenge the prosecution's case against them. They work to ensure that their client receives fair treatment under the law and aim to minimize any potential penalties or consequences associated with a criminal conviction. In essence, defense lawyers are advocates for individuals who have been accused of wrongdoing and seek to protect their rights throughout the legal process.