Ken Cheng, is a British born Chinese (BBC) 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's also taken his stand-up performances the Edinburgh Festival. Cheng directed The Footlights International Tour Show 2015: Love Handles, which toured the UK, Paris and North America. Towards the end of the international tour show, Cheng was detained in the Cayman Islands due to passport issues, and later as a result of a hurricane in the Caribbean. He returned to UK in time for the final week of shows at the ADC Theatre, Cambridge.
Reviewing the 2015 BBC New Comedy Awards for the comedy news, reviews and listings site Chortle, Steve Bennett stated that Cheng "deserved to win".
On 22 August, Cheng won "Joke of the Fringe".
In September 2017 his Twitter thread insulting the national flag of every country in the world received national media coverage.