Personality
The HBO website provides the following character description:
The mother of Brutus, and the erstwhile lover of Caesar. Servilia of the Junii is a staunchly Republican aristocrat. Sophisticated, elegant, and subtle, she considers herself several rungs above Atia in the social hierarchy, a fact that chafes Atia.
An elegant, refined and proper patrician lady, Servilia initially follows her heart and her love for Caesar, rather than the political ideals held by her son Brutus. It is a choice that costs her dearly when Caesar – for political reasons set in motion by social rival Atia – rejects her.
Servilia's anger, pain and desire for vengeance unleash a dark side which proves her to be as cunning and malevolent a manipulator as Atia herself. Blindly loyal to the Roman Republic and now relieved of all sentiment for Caesar, Servilia doesn't hesitate in offering up her son to be used as a political tool against those who would threaten the Republic. She soon becomes the driving force behind the plot (with Cassius and Brutus) to assassinate the dictator Caesar.
Read more about this topic: Servilia Of The Junii