Jukka Markus "Zarkus" Poussa (12 July 1975 – 24 January 2016) was a Finnish musician. He was a member of the groups Giant Robot, RinneRadio, Hemma Beast and Anna-Mari Kähärän Orkesteri. He was known for using humor in his songs and performances. He was also the musician in the television show W-tyyli, and in 2007 he appeared in the series Jokainen vieras on laulun arvoinen. He died suddenly in January 2016 at the age of 40.
- Kokko, Laura (25 November 2008). "Zarkus Poussa: Idols-Anna kuulostaa virolaistähti Kerliltä! - Idols 2008". MTV3 (in Finnish). Retrieved 26 April 2012.
- Seppänen, Mika (26 January 2016). "Lähiomaiset julkaisivat virallisen tiedotteen Zarkus Poussan kuolemasta". Ilta-Sanomat (in Finnish). Retrieved 26 January 2016.