<Underdog> (2018) is the second project that LEE and OH collaborated after their first project Leafie, a <Hen into the Wild> (2011) which marked a record high box office in Korean animation history. LEE, known for <Nudeulludeu 2> (1999), <Goindol> (2000) participated as animation director and OH as director who has produced <A Little dinosour doolie - The Adventure of Ice Planet> (1996) where he took part in from development stage.
<Underdog> (2018) is the second project that LEE and OH collaborated after their first project Leafie, a <Hen into the Wild> (2011) which marked a record high box office in Korean animation history. LEE, known for <Nudeulludeu 2> (1999), <Goindol> (2000) participated as animation director and OH as director who has produced <A Little dinosour doolie - The Adventure of Ice Planet> (1996) where he took part in from development stage.