They are the most common beings on earth. They have possibly been around as long as biological life has existed. They are considered dangerous and deadly – but they are much more than that. They are everywhere. Viruses.
| Actor | Role |
|---|---|
| NNina StrehleinNarrator | Narrator |
| SSebastien Calvignac-SpencerSelf | Self |
| FFelix d'HerelleSelf (archive footage) | Self (archive footage) |
| PPatrick ForterreSelf | Self |
| GGottfried GruberSelf | Self |
| LLeonce KouadioSelf | Self |
| MMzia KutateladzeSelf | Self |
| MMichael MenzelSelf | Self |
| DDavid PrangishviliSelf | Self |
| AAndreas HaasSelf | Self |
| GGuigui L'AmourSelf | Self |