Christopher William Mercer (born 26 January 1985), known by stage name Rusko, is a British electronic music producer and DJ from York, England.

Rusko was born on 26 January 1985[1][2] in Leeds and brought up in nearby York.

[3] Immersed in the world of dubstep through Leeds based event "Sub Dub" which was held at the West Indian Centre, Rusko moved to London to work with the record label Sub Soldiers with now no longer associated act Caspa.

[1] On 26 October 2012, Fact Magazine posted an interview with Rusko where he stated he planned to release his music for free instead of signing with Mad Decent again, following his dispute with the record label about the release of his second album.

[5] On 4 May 2017, Rusko announced on Twitter that he had been diagnosed with gastric lymphoma and would be cancelling all events in summer 2017 while undergoing treatment,[6] with his first cycle of chemotherapy completed on 31 May 2017.