Petar Cvirn was born on September 1, 1986 in Zagreb, Croatia. Cvirn first started acting at the age of 10 in a partner theatre of the Croatian National Theatre. He has been chosen since elementary school to play lead roles 14 different plays and works such as Cinderella, and as the Greek God Apolo in The Fury of the Gods. He debuted on the big screen as a 13-year-old in the movie God Forbid a Worse Thing Should Happen by Snježana Tribuson. He is known for Dolina sunca (2009), Snivaj, zlato moje (2005) and God Forbid a Worse Thing Should Happen (2002).