Colin Cunningham (born December 29, 1986) known professionally as Colin "Doc" Brittain, is an American songwriter, producer, and musician signed to Warner Chappell Music. In 2023, he joined Linkin Park as the band's drummer.
Prior to joining Linkin Park, he wrote and produced for acts such as Papa Roach, Story of the Year, 311, A Day to Remember, Foundry, Dashboard Confessional, 5 Seconds of Summer, From Ashes to New, and One Ok Rock.
