(1) This rule applies to proceedings in the superior court under Penal Code section 1367 et seq. To determine the mental competency of a criminal defendant.To be eligible for diversion, ALL of the following requirements must be met: 1. Have you been arrested and charged with a crime? Contact Sacramento Criminal Defense Lawyer Richard Dudek for free consultation today. Defendant was charged with vehicular manslaughter. (Pen. In an insanity defense, the defendant admits the action but asserts a lack of culpability based on mental illness. This pleading paper has a fillable caption and is formatted for Sacramento County but can be altered for use in any California county. Although not included in the caption, Hollis also identifies as a defendant in the body and seeks relief from FNU Nichols. The insanity defense refers to a defense that a defendant can plead in a criminal trial.