| A fantasy drama set in a world of legendary heroes and mythical creatures. Far from home and desperate for answers, Jason washes up on the shores of an ancient land. A mysterious place; a world of bull leaping, of snake haired goddesses and of palaces so vast it was said they were built by giants - this is the city of Atlantis. Aided by his two new friends, Pythagoras and Hercules, Jason embarks on a voyage of discovery, and salvation, which sees him brush shoulders with Medusa, come face to face with the Minotaur and even do battle with the dead. |
| Name | Character | Episodes |
|---|---|---|
| Mark Addy | Hercules | 25 |
| Jemima Rooper | Medusa | 25 |
| Sarah Parish | Pasiphae | 25 |
| Juliet Stevenson | The Oracle | 25 |
| Robert Emms | Pythagoras | 25 |
| Jack Donnelly | Jason | 25 |
| Aiysha Hart | Ariadne | 25 |
| Alexander Siddig | Minos | 13 |
| Vincent Regan | Dion | 12 |
| Robert Lindsay | Daedalus | 12 |
| Amy Manson | Medea | 12 |
| Lorcan Cranitch | Cilix | 12 |
| Stuart Davidson | Atlantean | 7 |
| Anya Taylor-Joy | Cassandra | 5 |
| Ronald Pickup | Orpheus | 3 |
| John Hannah | Aeson | 2 |
| John Light | Diagoras | 2 |
| Lucy Cohu | Circe | 2 |
| Robert Pugh | Sarpedon | 2 |
| Hannah Arterton | Korinna | 2 |
| John Hannah | Tychon | 1 |
| Julian Glover | Eunapius | 1 |
| Anton Lesser | Kyros | 1 |
| Jason Watkins | Crios | 1 |
| Ron Donachie | Theos | 1 |
| Karl Johnson | Itheus | 1 |
| David Sterne | Dymas | 1 |
| Richard Dillane | Palos | 1 |
| Donald Sumpter | Tiresius | 1 |
| Frances Tomelty | Anysia | 1 |
| Gemma Jones | Campe | 1 |
| Mark Lewis Jones | Mac | 1 |
| Josef Altin | Rizon | 1 |
| Stuart Davidson | Lysis's Masseur | 1 |
| Joe Dixon | Ramos | 1 |
| Emily Taaffe | Elpis | 1 |
| Oliver Walker | Heptarian | 1 |
| Chris Obi | Shabaka | 1 |
| Ciarán Griffiths | Cyrus | 1 |
| Lynne Wilmot | Sophia | 1 |