Ger Duany was born in South Sudan, in Akobo in 1978. He is the fifth child of ten, born to a mother, Nyathak Muon Weng and father, Thabac Duany Wunbiel. He was forcefully recruited as a child soldier during the Second Sudanese Civil War. However, Duany successfully fled to Ethiopia for a second time, at age 14, then to Kenya and finally sought refuge in The United States when he was only sixteen, hence becoming one of the Lost Boys of Sudan. Duany made his debut as an actor in the 2004 philosophical comedy film, I Heart Huckabees, in which he played a refugee called Stephen Nimieri. Duany was picked in a nation-wide search for the role because the film's director David O. Russell wanted someone who had endured the real life experience of being a refugee. In 2010, Duany made an uncredited appearance in another Russell film, The Fighter, starring Mark Wahlberg and Christian Bale. He later had a very important role in the 2011 drama Restless City. In 2010, he produced and starred in the documentary Ger: To Be Separate, about his search for his family, after 18 years apart. He told the story of his long journey from a war child to a refugee to a Hollywood actor and a model, and the story of his return to South Sudan, to vote for the first time and celebrate the country's newly acquired independence on July 9, 2011.