Klemen is the professional name of Slovenian actor, comedian, television host and musician Klemen Slakonja who started his career in 2007 and is well-known for his impersonations of several Slovene musicians and international figures including philosopher Slavoj Žižek, Pope Francis, Vladimir Putin, Donald Trump, Angela Merkel and others. He has also hosted several television shows, including three editions of the Slovene national final.
He was selected to represent his home country in the Eurovision Song Contest 2025 in Basel with the song "How Much Time Do We Have Left", which failed to qualify from the first semi-final.