Every defendant has a constitutional right to an attorney or to represent themself if they so choose. The only exception is where a juvenile is being charged, in which case there is no right to representation other than via attorney.
While someone can appear in court without an attorney, it usually isn’t advisable since it is unlikely that the same result can be achieved. Minimally, you should take advantage of a free consultation to learn how a lawyer who is accomplished in defending Edison offenses can help you.