Known for his roles in such Danish and Swedish films as, respectively, Daisy Diamond and Cornelis. He was also in acclaimed movies such as The Girl with the Dragon Tattoo and Tinker Tailor Soldier Spy. In 2019, he began starring in Netflix's Quicksand.
During his teenage years, he traveled to Brazil and studied the art of Capoeira. Upon his return to Europe, he trained at the Stockholm Academy of Dramatic Arts.
He starred as Jimmy in a 2009 Danish film titled Brotherhood.
The grandson of Holocaust survivors from Slovakia, he was born in Sweden and raised in Denmark. His father, Lars Dencik, taught psychology at Roskilde University in Denmark.
He costarred with Hank Von Helvete in the 2010 film Cornelis.