Professional poker player and comedian noted for his YouTube comedy character, Mark Liu, and reaching the final of the 2015 BBC New Comedy Awards. Cheng studied mathematics at St John's College, Cambridge University but dropped out to become a professional poker player. He wrote and performed for the Cambridge Footlights, often known to refer to himself as a 'footlights regular', and he has also taken his stand-up performances to the Edinburgh Festival. Cheng directed The Footlights International Tour Show 2015: Love Handles, which toured the UK, Paris and North America.