Spartacus: Vengeance is the third installment in the Spartacus series, and the official second season after its prequel, Spartacus: Blood and Sand. Spartacus: Vengeance premiered on January 27, 2012, and concluded on March 30, 2012.
Vengeance begins 6 weeks after the conclusion of Massacre at the House of Batiatus. Spartacus now leads a band of escaped slaves who hope to embrace freedom. However, the path to escape the grasp of Rome is one of blood, and the power of the Republic sends a force to silence the rebellious slaves for good. With the choice of vengeance and the greater good leads to an epic journey that focuses on the time from Spartacus leaving the ludus to the inevitable battle at Mount Vesuvius.
On the heels of the bloody escape from the House of Batiatus that concluded "Spartacus: Blood and Sand", the gladiator rebellion continues and begins to strike fear into the heart of the Roman Republic in "Spartacus: Vengeance". Gaius Claudius Glaber and his Roman troops are sent to Capua to crush the growing band of freed slaves that Spartacus leads before it can inflict further damage. Spartacus is presented the choice of satisfying his personal need for vengeance against the man that condemned his wife to slavery and eventual death or making the larger sacrifices necessary to keep his budding army from breaking apart. Containing all of the blood-soaked action, exotic sexuality, and villainy and heroism that has come to distinguish the series, the tale of Spartacus resumes in epic fashion.
Liam McIntyre as Spartacus – a Thracian slave who became a gladiator, and champion, in the ludus of Quintus Batiatus. After the massacre at the House of Batiatus, Spartacus formed his own band of rebels but finds himself struggling to choose between the greater good and his desire for vengeance.
Peter Mensah as Oenomaus – Formerly Doctore; Batiatus' taskmaster and trainer of gladiators, now a trusted mentor to Spartacus and his rebel army.
Manu Bennett as Crixus – 'The Undefeated Gaul', he was Batiatus' top gladiator before Spartacus' arrival, now the second-in-command of Spartacus rebel army, fighting to find his lost lover, Naevia.
Craig Parker as Gaius Claudius Glaber – Ilithyia's husband and a praetor. Responsible for Spartacus' enslavement as a gladiator and the death of his wife, he is now tasked with putting down the revolt.
Lucy Lawless as Lucretia – Quintus Batiatus' widow, she was seriously injured from the wound she suffered at the hands of her former lover Crixus. Her recovery was presented to the people of Rome as Lucretia's personal connections with the gods, allegedly garnering her the gift of prophecy.
Nick Tarabay as Ashur – a clever Syrian slave and former gladiator who narrowly escaped death during the massacre at the House of Batiatus. He now seeks revenge against the escaped gladiators who never accepted him as one of their own.
Viva Bianca as Ilithyia – The daughter of Senator Albinius and wife of Glaber, now pregnant. Once a trusted friend of Lucretia before being betrayed soon before the revolt.
Dan Feuerriegel as Agron – a German gladiator who was sold to Batiatus' ludus, he was the first to join Spartacus in his revolt, where his brother Duro died. He is now one of Spartacus' trusted warriors.
Katrina Law as Mira – a slave who aided in Spartacus's escape. Now a fierce fighter for Spartacus as well as his love interest.
Tom Hobbs as Seppius – a young Capua citizen of note. He wishes to strip the honor of capturing Spartacus from Glaber in order to advance himself within the social heirarchy of Rome.
Peter McCauley as Lucius Caelius – a Roman hermit who later joins the rebel's cause due to the pain he suffered by the people he once held to heart.
Pana Hema Taylor as Nasir – a Syrian rebel and former body slave. He later becomes the lover of Agron.
Ioane King as Rhaskos – a Gaul rebel and former gladiator in the House of Batiatus. A close friend and comrade of Crixus.
Alex Way as Acer – a Gaul rebel and former gladiator in the House of Batiatus.
Joseph Naufahu as Liscus – a Gaul rebel and former gladiator in the House of Batiatus.
Brian Manthenga as Fortis – a Numidian rebel and former gladiator in the House of Batiatus.
Paul Glover as Salvius - one of Glabers soldiers. He is fiercely loyal to his commander and desires to put down the revolt.
Kevin J. Wilson as Albinius – a Roman Senator who is the father of Ilithyia. He holds his son-in-law, Glaber, in low regard and desires him to put down Spartacus and the slave uprising.
Historically, Gaius Claudius Glaber and Publius Varinius were sent as two separate detachments against Spartacus, yet in the show they are seen as rivals in pursuit of Spartacus at the same time.
Many notable gladiators and slaves that debut this season did not appear in Blood and Sand despite being established as having escaped from the House of Batiatus.