Acheron Cocytus and Phlegethon both flowed. The Roman poet Virgil called it the principal river of Tartarus, from which the Styx and Cocytus both sprang. The newly dead would be ferried across the Acheron by Charon in order to enter the Underworld. The Suda describes the river as "a place of healing, not a place of punishment, cleansing and purging the sins of humans". According to later traditions, Acheron had been a son of Helios and either Gaia or Demeter, who had been turned into the Underworld river bearing his name after he refreshed the Titans with drink during their contest
Class of the Titans first three episodes were released on February 19, 2008 as "Chaos" and includes a behind-the-scenes featurette. The second DVD, "Trojan Horse", was released on May 20, 2008 and contains episodes 4–6. "Class of the Titans: Vol. 1 Season 1" was released November 18, 2008 and contains episodes 1–13. No further episodes were released on DVD.<br> However, in 2016, Amazon has uploaded the show on its video streaming website Amazon Prime, listing it broken into 4 "seasons". The feared titan of time Cronus escapes from Tartarus' prison after thousands of years of imprisonment when the planets aligned on New Year's Eve.