In March 2016 , Yeun was cast in Joe Lynch 's action horror film '' Mayhem '' . The film was released in theaters on November 10 , 2017 . In April 2016 , Yeun was cast in Bong Joon-ho 's action-adventure film '' Okja '' . The film competed for the '' Palme d'Or '' in the main competition section at the 2017 Cannes Film Festival . It was released on Netflix on June 28 , 2017 . Yeun also provided the voice of Bo in 2017 's '' The Star ''
2017 Cannes Film Festival
2017 Cannes Film Festival
Steven Yeun