Nathalie Cuzner — also credited as Natalie Cuzner — has played a variety of aliens in BBC Wales Doctor Who, and related programmes, since 2004. Most notably, she was credited as "performance of Kisar" in the 2018 Doctor Who television story Demons of the Punjab.
Cuzner had a background in dance before being selected to work on Doctor Who. Her "intensive" audition in 2004 was led by choreographer Ailsa Berk. In 2016, she recalled having a close working relationship with Berk, as well as Paul Kasey, another monster actor for Doctor Who.