The Model Penal Code (MPC) is a comprehensive set of criminal law guidelines created to standardize and simplify the laws governing criminal behavior in the United States. It serves as a reference point for states seeking to revise their own criminal codes, addressing crucial aspects such as definitions of offenses, defenses, and degrees of culpability. The MPC plays a significant role in clarifying mens rea, establishing different classifications of homicide, detailing assault and battery laws, and outlining various theft offenses.