Erich von Däniken's "Chariots of the Gods?" suggests that aliens visited Earth in the distant past, and there are those who believe that he will be proven right.
| Name | Type | Role | |
|---|---|---|---|
| Kevin Burns | Writer | ||
| Kristina Djokic | Writer | ||
| Max Thompson | Writer | ||
| Lara Shaghoian | Producer | Co-Producer | |
| Giorgio A. Tsoukalos | Guest Star | Self - Publisher, Legendary Times Magazine | |
| Robbie Graham | Guest Star | Self - Author, Silver Screen Saucers | |
| Paul Bahn | Guest Star | Self - Author, Geoglyphs: Mysteries of the Ancient World | |
| Ramy Romany | Guest Star | Self - Egyptologist | |
| Kevin Burns | Guest Star | Self - Executive Producer, Ancient Aliens | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| Jonathan Young | Guest Star | Self - Founding Curator, Joseph Campbell Archives | |
| Brien Foerster | Guest Star | Self - Author, The Enigma of Tiwanaku and Puma Punku | |
| Dr. Travis Taylor | Guest Star | Self - Astrophysicist | |
| Ariel Bar Tzadok | Guest Star | Self - Founder, KosherTorah School | |
| Megan Fox | Guest Star | Self - Actor/Producer | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Jason Martell | Guest Star | Self - Author, Ancient Alien Artifacts | |
| Michael Dennin | Guest Star | Self - Physicist, Univ. of California, Irvine | |
| Linda Moulton Howe | Guest Star | Self - Investigative Journalist, Earthfiles | |
| Erich von Däniken | Guest Star | Self - Author, Chariots of the Gods | |
| Robert Bauval | Guest Star | Self - Co-Author, Black Genesis | |
| William Shatner | Guest Star | Self - Actor/Filmmaker | |
| Andrew Collins | Guest Star | Self - Author, The Cygnus Key | |
| Nick Pope | Guest Star | Self - U.K. Ministry of Defense (1985-2006) | |
| Michael 'Mike' Bara | Guest Star | Self - Author, Hidden Agenda | |
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| Max Thompson | Executive Producer | ||
| David Silver | Executive Producer | ||
| Scott Hartford | Executive Producer | Co-Executive Producer | |
| David Osper | Executive Producer | Co-Executive Producer | |
| Kevin Burns | Executive Producer | ||
| Frankie Glass | Executive Producer | Co-Executive Producer | |
| Kim Sheerin | Executive Producer | ||
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer |