Klus moved to Prague aged 15 to pursue a sporting career, and was a member of the gold medal winning team in modern pentathlon in the 2002 European championship.

In September 2012 he graduated in drama from the Faculty of the Academy of Performing Arts (DAMU) in Prague.

It was performed live at Český slavík 2011, a mainstream Czech music awards ceremony.

In March 2024, Klus posted a video on social media discussing the Israeli invasion of the Gaza Strip, in which he expressed solidarity with people in Gaza, criticised the Czech government's stance on the conflict, and compared the continuing expansion of Israel to previous occupations of Czechoslovakia.

[9] Czech journalists including Ludek Fiala from Novinky.cz accused Klus of factually inaccuracies in his post and criticised him for failing to condemn the Hamas attack on Israel on 7 October 2023.