Ji Soo (born Kim Ji Soo) is a South Korean actor. He made his acting debut on the stage in 2009, with the play "Bom Sam Wasn't There," then starred in several short films. But Ji-soo's breakout role came in 2015 as a troubled teen in the television drama "Angry Mom." He then followed up with a wonderful performance in "Sassy Go Go" and starred in mini-drama "Page Turner." He portrayed the 14th Prince in "Scarlet Heart: Ryeo" aka "Moon Lovers" in August 2016.