Mason Moon Moorhouse is a Canadian-Korean child actor and model. Following his acting debut as an infant in the movie Baby and I at three months of age, he "hosted" a reality TV show called Good Daddy which, though originally a Chuseok schedule, received positive attention and was continued as a weekly program. Mason then began being called "Little Nichkhun" after the 2PM member.

He was then in a TV series called 3 Suspicious Men followed by starring, with his two younger brothers, in the third season of reality TV series Hello Baby which aired from November 2010-early 2011. He has been a model for the Benetton Group fashion brand and was also chosen as the face of kid's brand R.ROBOT. In 2012 he appeared in his second movie called Love Clinique. He has since performed alongside Kim Ha Neul in Making Family, and in 2019 he appeared in movies Riot Girls and Polar.