Sonja Ruppersberg is the lead singer of the South African heavy metal band, Terminatryx, and appeared as the main villainess in the band's 2008 music video, Virus.
The video features Sonja arriving home and seeing a package at her front door, which is revealed to contain a video cassette. She opens the package and inserts the video in her Betamax, only to see that it solely contains footage of the full moon shown through static. At that moment, Sonja began turning into a vicious werewolf, displaying wild, bloodshot eyes and fangs before escaping through her window and prowling through the woods.
As the video progresses, Sonja's transformation continued, and her presence surprised a driver and passenger on the road, leading to the car crashing. Both men survived the crash, but afterwards, the evil Sonja (in her full werewolf form) killed the driver and did the same to the passenger. The villainess continued prowling in the woods, where she found a male camper and mauled him to death as well. The video ends with the footage of the full moon on Sonja's TV screen.