There is no law that says a person must be represented by a lawyer in criminal court, but it is strongly suggested that they do so. In fact, people who are unable to afford their own legal counsel are assigned public defenders so that they have an opportunity for a fair trial. No matter how straightforward your criminal case may seem, it is never recommended that a person does not work with an attorney regardless. The procedures in court can be overwhelming, and by hiring legal counsel you can give yourself the best chance of a comprehensive and fair trial.