Entertainment Alexander Skarsgard: True Blood’s Sexiest Vampire By Us Weekly Staff August 25, 2011 10 Bloodthirsty Bad Boy Skarsgard was cast as vampire Eric Northman in 2008. Credit: Bloodthirsty Bad Boy Skarsgard was cast as vampire Eric Northman in 2008. In order to view the gallery, please allow Manage Cookies For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube! In this article Alexander Skarsgard