William Reed Mullin (February 12, 1966 – January 27, 2020) was an American musician from Raleigh, North Carolina, best known as the co-founder and drummer of heavy metal band Corrosion of Conformity.

[1] Mullin was a co-founding member of the band Corrosion of Conformity with Mike Dean and Woody Weatherman[citation needed].

[6] In 2014, Mullin co-founded the hardcore punk supergroup Teenage Time Killers with Corrosion of Conformity bandmate Mike Dean and My Ruin guitarist Mick Murphy[citation needed].

Other members included Foo Fighters frontman Dave Grohl, Lamb of God vocalist Randy Blythe, Stone Sour and Slipknot vocalist Corey Taylor, Bad Religion guitarist Brian Baker, former Queens of the Stone Age bassist Nick Oliveri, among others[citation needed].

He had often missed shows in the four years prior to his death due to a variety of health issues, including an alcohol-related seizure he suffered in June 2016.