Twilight, True Blood and The Vampire Diaries have sparked off intense fan activity and generated a large quantity of fan fiction: stories which test the limits of an already existing fictional work and explore gaps and discrepancies within it. Working from the idea that texts constitute archives, expanded and altered by each addition, close readings of a selection of fanfics illustrate particular transformative practices in the online environment. The central figure of the vampire is read through the lens of fanfic authors’ contributions to the archives, particularly regarding how figuratively or literally refanged versions of the trope are used to subvert norms established in the source texts concerning depictions of sexuality, sexual practices, and monstrosity. Complex relationships between authorial power and subversion, between mainstream messages and individual interpretations, are examined through fanfic analyses, the findings contributing to discussions about contemporary literary creativity.