Jukka Markus "Zarkus" Poussa (12 July 1975 – 24 January 2016) was a Finnish musician. He was a member of the groups , RinneRadio, and . He was known for using humor in his songs and performances. He was also the musician in the television show , and in 2007 he appeared in the series Jokainen vieras on laulun arvoinen. He died suddenly in January 2016 at the age of 40.