A corrupt Roman senator who clashes with magistrate Servilio, hires a prostitute to frame his rival, and attempts murder with poisonous snakes before ultimately being sentenced to crucifixion after confessing in court.
Cinico acts as Atticus's political superior and strategic adviser.
Atticus is summoned back to Rome by Cinico, the leader of his party, and later turns to him for advice when facing prosecution.
Their mutual hostility develops into the film's central personal rivalry.
Atticus and Servilio first clash after their carriages collide on the Appian Way and later argue again during a match in the Colosseum stands.
Iside becomes Atticus's new romantic companion and benefits from his patronage.
Atticus dismisses his previous lover and replaces her with Iside, an Egyptian model, giving her the house previously occupied by the former lover.
Their marriage is undermined by Atticus's secrecy and infidelity.
The plot identifies Cornelia as Atticus's wife, while Atticus secretly maintains an affair during his seaside holiday.
Explore the full interactive character relationship map of S.P.Q.R.: 2,000 and a Half Years Ago