The werewolf in popular fiction has begun to change rapidly. Literary critics have observed this development and its impact on the werewolf in fiction, with theorists arguing that the modern werewolf offers new possibilities about how we view identity and the self. Although this monograph is preoccupied with the same concerns, it represents a departure from other critical works by analysing the werewolf’s subjectivity/identity as a work-in-progress, where the fixed and final form is yet to be arrived at – and may never be fully accomplished. Using the critical theories of Deleuze and Guattari and their concepts of ‘multiplicities’ and ‘becoming’, this work argues that the werewolf is in a state of constant evolution as it develops new modes of being in popular fiction. Following on from this examination of lycanthropic subjectivity, the book goes on to examine the significant developments that have resulted from the advent of the werewolf as subject, few of which have received any sustained critical attention to date.