Joshua "Josh" McKenzie (born 10 July 1984), known by his stage name MckNasty, is an English DJ and drummer from London. He is the older brother of Labrinth.
McKenzie is the drummer for Wretch 32's live band and plays alongside two of his siblings. He's also the drummer for Naughty Boy's live band. In 2012, McKenzie made an appearance in Plan B's film Ill Manors, and the music video for the single "Playing with Fire", which featured vocals and production from Labrinth. In 2013 McKenzie auditioned for, and achieved four yes votes in, the seventh series of Britain's Got Talent. The judges put him through to the semi-finals, but he was knocked out by the public vote on 28 May 2013.