mark andrew labbett (born 15 august 1965) is a british quizzer and television personality. he is a "chaser" on the itv game show "the chase", starting in 2009 and from june 2021, as one of the four chasers on abc's version of "the chase usa". he previously appeared between 2013 and 2015 on gsn's american version. his nickname of these shows is "the beast". labbett has appeared as a contestant on several other television quiz shows and is a regular in quizzing competitions.