Who is Messalina from Claudius the God and His Wife Messalina and what is their importance?

Messalina is Claudius' third wife. The couple have two children, Britannicus and Octavia. Although she has many responsibilities as the Director of Public Morals, Messalina herself, indulges in many immoral acts throughout her life. After Claudius ascension to the throne, Messalina helps him choose ministers and suggests increased security...... such as searching women who enter the palace and positioning armed guards at banquets. She reassures Claudius when he is disappointed with his profile on a new coin. Messalina has many politic responsibilities, including assisting Claudius with reforming the Roll of Citizens and purging the Senate. She often manipulates Claudius for her own interest. Claudius is unaware that Messalina accepts bribes to grant citizenship.