This paper explores the phenomenon of virtual actors and liminal spaces and examines their connection to the uncanny valley effect, a concept that describes the feeling of discomfort that arises when we come in contact with a digital (CGI) character who closely resembles, but does not fully look like a real human being. The paper also delves deeper into the topic by investigating psychological, cognitive and visual theories that are closely related to this effect. Through a precise analysis of all relevant areas, this paper provides a summary of key factors, a review of expert literature and previous research, and presents all of this through numerous examples that illustrate the subject with more efficiency and precision. The practical part of the paper aims to provide insight into the production of virtual actors, while the research section rounds out the topic and accompanies the practical part in determining what should be done and what should be avoided to achieve a quality result.