Film performances have long served as a point of contention in Film Studies. The elusive nature of the art form is often overlooked, and consequently approached via history, star studies, or in reducing a performance to the mise-en-scène. The aim of this thesis is to theoretically root film performances by deviating from classical performance analysis, and focusing on the abstract qualities that demarcate the practice of becoming other. To do this, I turn to the works of Gilles Deleuze (and Félix Guattari) when confronting the unique relationship between the actor’s frame and process to suggest that film performances are necessarily informed by the body and time. The film body is a doubled body, belonging to both actor and character. It ser...