Regarding representation in Court

By mentioning a criminal, you mean to say an accused?

A party to ny litigation/case before the court can very well appear as party in person either in the civil court or criminal court.

The accused has to file a memo stating that he would like to appear as party in person to represent his cse by himself  and pray to court to pass an order to that effect. 

Provision for Fighting One's Own Case as per Advocate's Act. Section 32 of the Advocate's Act clearly mentions, the court may allow any person to appear before it even if he is not an advocate. Therefore, one gets the statutory right to defend one's own case through Advocate Act in India.

But if you are poor and can not really afford such services, the court can refer your case to District Legal Services Authority for legal aid.  Do not be overconfident in criminal cases and take risks in criminal cases, though you have excellent knowledge and highly intellectual as technicalities and professional tacts have their role to play.  What we see in movies is entirely fiction and what one faces in court is absolute reality.

You are welcome for your appreciations.