| Name | Character | Episodes |
|---|---|---|
| Josh Gates | Self - Host | 52 |
| Paul Sorvino | Self | 1 |
| Dennis Quaid | Self | 1 |
| Michael Imperioli | Self | 1 |
| John Rhys-Davies | Self | 1 |
| Karen Allen | Self | 1 |
| BD Wong | Self | 1 |
| Joel McHale | Self | 1 |
| Kane Hodder | Self | 1 |
| JoBeth Williams | Self | 1 |
| Steve Schirripa | Self | 1 |
| Jack Osbourne | Self | 1 |
| Drew Scott | Self | 1 |
| Jonathan Silver Scott | Self | 1 |
| Dr. Sandra Lee | Self | 1 |