| Name | Character | Episodes |
|---|---|---|
| Germaine Greer | Self - Panellist | 8 |
| Billy Bragg | Self - Panellist | 4 |
| Magda Szubanski | Self - Panellist | 3 |
| Brian Cox | Self - Panellist | 3 |
| Peter Singer | Self - Panellist | 3 |
| Benjamin Law | Self - Panellist | 3 |
| Lawrence Krauss | Self - Panellist | 3 |
| Alastair Campbell | Self - Panellist | 2 |
| Richard Dawkins | Self - Panellist | 2 |
| Ruby Wax | Self - Panellist | 2 |
| Ayaan Hirsi Ali | Self - Panellist | 2 |
| Jonathan Biggins | Self - Panellist | 2 |
| Rachel Griffiths | Self - Panellist | 1 |
| Ben Elton | Self - Panellist | 1 |
| Anthony LaPaglia | Self - Panellist | 1 |
| David Suchet | Self - Panellist | 1 |
| Miriam Margolyes | Self - Panellist | 1 |
| Barry Humphries | Self - Panellist | 1 |
| Simon Callow | Self - Panellist | 1 |
| Yael Stone | Self - Panellist | 1 |
| Armando Iannucci | Self - Panellist | 1 |
| Pamela Stephenson | Self - Panellist | 1 |
| Shaun Micallef | Self - Panellist | 1 |
| Neil deGrasse Tyson | Self - Panellist | 1 |
| Bill Gates | Self - Panellist | 1 |
| Alexei Sayle | Self - Panellist | 1 |
| Jordan B. Peterson | Self - Panellist | 1 |
| Lenny Henry | Self - Panellist | 1 |
| Rhys Muldoon | Self - Panellist | 1 |
| Cornel West | Self - Panelist | 1 |
| Anthony Field | Self - Musical Guest | 1 |
| Marlon Williams | Self - Musical Guest | 1 |
| Joan Baez | Self - Panelist | 1 |
| Simon Pryce | Self - Musical Guest | 1 |
| David Suzuki | Self - Panellist | 1 |
| Courtney Act | Self - Panellist | 1 |
| Clementine Ford | Self - Panellist | 1 |
| Haifaa al-Mansour | Self - Panellist | 1 |
| Emma Watkins | Self - Musical Guest | 1 |
| Jane Goodall | Self - Panellist | 1 |
| Meyne Wyatt | Self - Panellist | 1 |
| Charles Firth | Self - Panellist | 1 |
| Christopher Hitchens | Self - Panellist | 1 |
| Derryn Hinch | Self - Panellist | 1 |
| Michael Franti | Self - Panellist | 1 |
| Lachlan Gillespie | Self - Musical Guest | 1 |
| Martha Wainwright | Self - Panellist | 1 |
| Tristan Harris | Self - Panellist | 1 |
| Nigel Kennedy | Self - Panellist | 1 |
| Dave Hughes | Self - Panellist | 1 |
| Dan Sultan | Self - Panellist | 1 |
| Tariq Ali | Self - Panellist | 1 |
| Slavoj Žižek | Self - Panellist | 1 |
| David Williamson | Self - Panellist | 1 |
| Luke McGregor | Self - Panellist | 1 |
| Paul Kelly | Self - Musical Guest | 1 |
| Michael E. Mann | Self - Panellist | 1 |
| Masha Gessen | Self - Panellist | 1 |
| Kate Miller-Heidke | Self - Panellist | 1 |
| Meshel Laurie | Self - Panellist | 1 |
| Jason Silva | Self - Panellist | 1 |
| Bill McKibben | Self - Panellist | 1 |
| Christine Lagarde | Self - Panellist | 1 |
| Bernard-Henri Lévy | Self - Panellist | 1 |
| Isabel Allende | Self - Panellist | 1 |
| Nitin Sawhney | Self - Panellist | 1 |
| Christa Hughes | Self - Panellist | 1 |